P0507 Code in 2026: High Idle, the Relearn That Gets Skipped, and When a Fast Idle Is Normal

P0507 is a code about a number, not a part.

The engine computer sets a target idle speed for the conditions it sees — engine temperature, the air conditioner, the electrical load, the gear — and opens the throttle, or an idle valve on older cars, just enough to hold it. P0507 — "Idle Air Control System RPM Higher Than Expected," which Stellantis prints as "Idle Speed Performance Higher Than Expected" and Nissan as "ISC SYSTEM" — means the engine ran faster than that target for long enough to set a code. It does not say why, and on some vehicles software sets it wrongly. Its neighbors are P0506 (idle lower than expected) and P0505 (the idle control system itself).

PulsCar went through 168 manufacturer documents on P0507, its neighbors, or a high idle — 150 from our search of NHTSA's index and 18 that a second, independent search found — service bulletins, special service messages, preliminary information, dealer notes, campaigns and special coverages from GM, Stellantis, Nissan, Infiniti, Hyundai, Kia, Audi, BMW, MINI, Ford, Toyota, Lexus, Scion, Mazda, Jaguar, Land Rover, Mercedes-Benz, Volvo, Lotus, Acura, Harley-Davidson and two truck makers — all 168 in full. 155 turned out to be relevant, and 43 name P0507 in their own text. The causes they document fall into five groups: a raised idle that is supposed to happen, software, a relearn that was skipped, an air leak, and — last — a throttle body or idle valve. Of the 43, nine tell a technician to replace a part, some only conditionally — a hose, a breather or valve kit, a dual clutch, a motor-generator for its own codes, a 12-volt battery — and none is a throttle body; two tell them to check the software or a stored setting before replacing anything.

The federal complaint file shows what a high idle feels like from the driver's seat. Of 780,071 complaints received by NHTSA from 2015 to September 2026, only 21 name P0507 — owners describe the symptom far more often than the code. So we went through every complaint our searches matched for P0505, P0506, P0507 or a high idle — 1,241 in all, 876 of them found by a second, independent search, each sorted twice, independently, by the same written rules. 774 name P0505 or P0507 or describe an engine idling or racing too fast at a standstill. In 368, the car crept hard, lurched or accelerated by itself; 51 describe a crash.

By the end you will know which of five routes your P0507 is on, what each costs in 2026, whether a bulletin or recall we went through applies to your vehicle, and the cheap step that gets skipped before a throttle body is sold.

Claims marked 🟢 rest on a document listed in the Sources section, read in full. Claims marked ⚪ are shop-price estimates carried from our repair guides. Owner-reported figures are what people told NHTSA, published with ODI numbers, and every complaint count here comes from the 1,241 complaints sorted twice and published.

I built PulsCar after a $380 "full diagnostic" in Phuket in 2025 led to roughly $6,000 over six months across several shops (the story is on the About page). P0507 is a small version of that pattern: a code that describes a symptom, a part that is easy to sell, and a relearn that costs little. Every claim below that rests on a document names it.

What P0507 says: the idle ran faster than the computer asked

The target and the result. On a modern car there is no idle screw. The engine computer decides the idle speed and moves the electronic throttle plate to get it; older cars use a separate idle air control valve that lets a metered amount of air around a closed throttle. The computer compares the speed it asked for with the speed it got. P0507 is the record of a gap on the high side that lasted too long. 🟢 One Stellantis case prints the threshold: "The DTC sets when the idle is 200 RPM’s above normal target without any vehicle speed (speed is zero) for 30 seconds or more."

Why the computer can lose. Air it cannot meter — a vacuum hose, a breather, a loose oil filler cap; a throttle or idle valve more open than the computer has learned; or software that asks for, or reports, the wrong thing.

What P0507 is not. It does not say the throttle body is bad. And it does not cover every fast idle: several makers raise the idle on purpose, with no code at all.

The neighbors. P0506 is the same comparison on the low side, and P0505 is the idle control system itself. Several documents below list them together.

First: is your idle actually wrong?

Before anything is diagnosed, the idle speed has to be compared with what the maker says it should be in that condition. Four makers put numbers on a raised idle that is normal.

The test that separates normal from a fault. A designed raised idle has a reason you can name — cold coolant, a long idle, a hot restart, a low battery, a filter cleaning — and it comes back down when the reason goes away. A fault usually does not come down, sets P0507 or a neighbor, or pushes the car forward against the brake. Route 1 quotes each document.

The maker atlas: who wrote about P0507, and what they blamed

The routes below quote each document; this is the map.

Stellantis: software first, then vacuum hoses. 🟢 Flash bulletins list P0507 on 2015-2016 ProMaster City 2.4 vans, 2018-2019 Wrangler JL 2.0 eTorque models and, through the hybrid controller, 2021 Ram 1500 3.6 eTorque trucks; a parts notice asks for the software check before any idle part. 🟢 Two technical-assistance (STAR) cases point technicians at vacuum hose connections for P0507; a third lists six designed idle modes on the 6.7 Cummins.

GM: the relearn, and idles that are normal. 🟢 PIP4578B ties P0507 to carbon and the idle learn; 🟢 PIP4912 describes Duramax idle modes and says not to repair them, and PIT4529 explains the idle options; 🟢 Camaro and police Tahoe idles were fixed with software.

Nissan, Acura and Infiniti: reprogram, then learn. 🟢 Each Nissan P0507 bulletin includes an idle air volume learn; Acura documents a learn wiped by an unrelated update.

Audi, BMW, MINI, Mercedes-Benz and Lotus: software, settings, air. 🟢 A stored throttle setting, a crankcase breather, an oil filler cap, an intake manifold leak, altitude software, and an idle stuck high after every start.

Hyundai, Kia, Jaguar, Land Rover and the trucks. 🟢 Hyundai files P0507 under a dual-clutch transmission; Kia replaces an accelerator pedal; Jaguar and Land Rover sell a breather kit, not a cover; Mack and Volvo trucks allow for software with no fault found.

The 10-minute P0507 check

1. Write down the idle speed and the conditions (3 minutes). Cold or warm engine, air conditioning on or off, headlights and blower on or off, in park or in gear. A number from the tachometer is worth more than "high."

2. Read every code, with freeze frame (2 minutes). P0507 alone, or with P0506, P0505, P0171, P2172, P04FC, P2279, P0101 or a throttle code, points to different routes.

3. Listen and look for air (2 minutes). A whistle or hiss at idle, especially one that changes when the oil filler cap is lifted, points at crankcase ventilation. Check that the oil filler cap is seated.

4. Think back (1 minute). Was the throttle body cleaned, or the engine computer replaced or reprogrammed, in the last few weeks? That is Route 3. A battery that was weak or recently disconnected belongs in the notes too — Nissan's Kicks and Versa bulletin starts with the battery.

5. Run the VIN (2 minutes). At nhtsa.gov/recalls, and with a dealer for bulletins and software updates, which do not show up as safety recalls.

Six P0507 situations, and which is yours

"Idle around 1,000 rpm on a cold morning, comes down as it warms, no code." A designed warm-up idle. → Route 1.

"P0507 on a 2018-2019 Jeep Wrangler 2.0 eTorque, a 2015-2016 Ram ProMaster City 2.4 or an early 2021 Ram 1500 3.6 eTorque." Software bulletins name the code. → Route 2.

"P0507 appeared after a throttle body cleaning or a new or reprogrammed engine computer." The relearn. → Route 3.

"P0507 with a whistle, P2279, P2172 or P04FC, or oil around the filler cap." Air getting in. → Route 4.

"High idle that never comes down, a sticking pedal feel, or a throttle code with P0507." The throttle body or idle valve. → Route 5.

"The car creeps hard, lurches or surges when idling high." Have it towed, then diagnosed. → the safety section below.

The P0507 price ladder, from the bottom up

The ⚪ figures come from our throttle body replacement cost guide and our guide to a car shaking at idle; the owner figures are listed with ODI numbers in the published file.

What does it cost to fix P0507 in 2026, and when is a throttle body the wrong purchase? Our repair guides carry a throttle body cleaning at $80 to $150 at a shop, a vacuum leak repair at $10 to $400 and an electronic throttle body at $300 to $800. In PulsCar's reading of 1,241 federal complaints, owners report $256 to $1,204 for an idle valve, a throttle body, a pedal sensor or a throttle actuator, and over $3,000 at a dealer after a first shop's parts missed the cause. A throttle body is the wrong purchase when the maker has a software bulletin for your vehicle, as Stellantis does for 2018-2019 Wranglers with the 2.0 eTorque; when the code appeared right after a cleaning or a new or reprogrammed engine computer and no relearn was done; and when a whistle, a loose oil filler cap or a breather leak is letting in air the computer cannot meter.

The five P0507 routes, cheapest first

Route 1 · A raised idle that is supposed to happen — $0

What it is. The engine computer raises the idle on purpose: to warm the cab, to charge a low battery, to clean an exhaust filter, to cool a hot engine, or for a short time after a hot restart. No code is set, and the idle comes down when the reason goes away.

What the documents say.

🟢 GM PIP4912, revisions B to G (2013 to 2020), 2010-2016 Express and Savana and 2010-2020 Silverado and Sierra with the 6.6 Duramax, by revision. High idle "may be commanded by the ECM for certain battery charging electrical loads or diesel particulate filter (DPF) cleaning processes," and "These idle up speeds may occur with no input from the customer." The tables give a base idle of 600 to 680 rpm depending on engine and body, three battery-charging levels up to 1,050 rpm on the pickups, 800 rpm during a filter cleaning and a 1,200 rpm default for the driver-set high idle. If the idle matches the tables, "the idle speed should be considered a normal characteristic of current vehicle design," and: "Do not attempt repairs for intermittent high idle as described in this PI."

🟢 GM PIT4529D and E, 2007-2019 Silverado and Sierra 2500 and 3500. Elevated Idle "Is a standard option on all 6.6L Diesel Engines, which elevates the engine idle speed from base idle to 1050 RPMs when outside temperatures are below 32°F (0°C) and the engine coolant temperature is below 150°F (65°C)." The same note separates it from the driver's High Idle option and the chassis-cab PTO switch.

🟢 Stellantis STAR case S2509000007, July 2025, 6.7-liter Cummins. "Some customers may experience an elevated idle with or without accompanying message in the IPC." The chart lists cab-heat warm-up at 1,000 rpm, hydrocarbon desorption at 1,000 rpm after two or more hours of idling or light duty, 1,000 rpm with coolant above 230°F, 800 rpm for the air conditioner in heat, 700 to 1,500 rpm for the power inverter, and a chassis-cab DeSOx mode at 1,100 rpm. The instruction is to compare the chart with vehicle data.

🟢 Ford special service messages 49430, 50636 and 51691, 2011-2023 F-Super Duty and 2016-2024 F-650 and F-750 with the 6.7 diesel. "Idle speed will be increased to 1000 revolutions per minute (rpms) for ambient temperatures near 26°C (80°F) and may increase to as high as 1200 rpms at -40 °C (- 40°F)," in 49430, which adds: "These elevated idle periods can last from 20-40 minutes, depending on ambient temperatures."

🟢 Stellantis 18-117-16, 2017 Dodge Caravan 3.6 built on or before 20 October 2016. This one began as a design and became a complaint: "The customer may describe a high idle speed at start up." The fix was a software change: "Software enhancement will lower the idle speed for the first 20 seconds after hot start up from 1000 rpm to a base idle of 650 rpm." 🟢 Volvo technical journal 37422, some 2025-and-newer models with the M1 engine: about 1,400 rpm for 1 to 3 minutes after a restart 30 minutes to an hour after shutdown — "No repairs are needed, this behavior is as intended and is according to design." 🟢 Land Rover LTB00855NAS1, 2015-2016 LR4 3.0 V6: a harsh shift from park to drive "when the ambient air temperature is low and the engine idle speed is elevated" — fixed in the transmission software, with the raised idle left alone. 🟢 Ford recalls 20V-795 and 25V-793, 2021 E-Series 7.3: the "elevated idle" in them is two designed features, stationary elevated idle control and battery charge protect; the recalls update the calibration for heat under the engine cover; the raised idle itself is intended.

What the owners report. The complaint file has the other side: owners who saw a fast idle on a cold start and found the car harder to hold. A 2018 Enclave owner, on a cold start with the "ENGINE AT HIGH IDLE SPEED," found the car rolling in reverse despite hard braking, then going forward into a garage cabinet. A complaint cannot show whether an idle was within design; treat any cold high idle as a reason for a firm foot on the brake before shifting.

The cheap cause that gets skipped. The owner's manual and the idle tables. A dealer can check a Duramax against PIP4912 in minutes; a Cummins against the Stellantis chart.

At the shop — say this: "What idle speed does the maker specify for this engine in this condition — cold, hot restart, filter cleaning, low battery? Is this idle within that, and does it come down when the condition ends?"

Route 2 · Software — $0 under warranty; 0.2 to 0.3 hours in the Stellantis flashes

What it is. The engine computer, or a module that talks to it, asks for the wrong idle, holds a high idle too long, or reports the code when nothing is wrong. The fix is a reprogram.

What the documents say.

🟢 Stellantis, 2018-2019 Jeep Wrangler JL with the 2.0-liter eTorque. A one-page parts notice for model years 2018-2019: "For concern of P0507 diagnostic trouble code, please verify the powertrain control" module "is at the latest software level prior to replacing any components related to P0507 diagnostics." The flash bulletins that follow — 18-018-20 and 18-144-22 for the 2018, 18-022-20 and 18-114-22 for the 2019 — each list "P0507 - Idle Speed Performance Higher Than Expected." and reprogram the engine computer, then bring the brake and hybrid controllers to the latest software. 🟢 08-144-23 and 08-145-23 do the same through the hybrid controller: "CAUSE: HCP Software." The belt starter-generator is replaced only for its own codes — "MGU should only be replaced if DTCs P0C01-00 and P0C05-00 or a loud noise in the MGU is present."

🟢 Stellantis, 2015-2016 Ram ProMaster City 2.4. Five flash bulletins from 18-048-15 REV. A to 18-063-17 REV. A (September 2017) list P0506 and P0507, reprogram the engine computer and replace nothing. 🟢 08-037-21, 2021 Ram 1500 3.6 eTorque built on or before 5 January 2021: P0506 and P0507 are fixed by reprogramming the hybrid control processor, and the bulletin warns: "Failure to flash the module at room temperature can cause the flash procedure to not complete which could suggest an unnecessary component replacement."

🟢 Nissan NTB16-057, 2016 Maxima, and NTB21-080, 2020-2021 Frontier. NTB16-057: "The MIL is ON with DTC P0507 (ISC SYSTEM) stored." NTB21-080 lists P0507 with P0223 and P2135. The engine computer is reprogrammed, and NTB16-057 adds: "you will be required to perform Throttle Valve Closed Position, Idle Air Volume Learn, Accelerator Closed Position, and DTC erase." The Frontier bulletin adds: "There are no drivability concerns."

🟢 Audi 2053040/2 and /3 — the /2 revision for the 2018 A6 and 2019-2020 A3, Q3 and TT, the /3 for the 2018 A6 2.0. P050700, idle speed too high, while the catalyst warms: "This is caused by incorrect basic settings for the throttle body stored in the engine control module, not due to a component defect." And: "Do not replace the throttle body." The /2 revision prescribes a throttle body adaption; /3 replaces it with an engine software update. 🟢 Audi 2060075/1 and /2, 2019 A6 and A7 3.0: an idle of about 1,500 rpm from the transmission's torque demand, fixed by engine and transmission software.

🟢 BMW B12 10 17 and MINI M12 03 17. Primarily above 5,000 feet with a warm engine, "the idle is sporadically elevated (up to approx. 1200 rpm)," with BMW's own fault 1E0001 rather than P0507, caused by an engine software error: "Parts replacement will not improve the situation and is not recommended."

🟢 Hyundai 21-AT-005H, 2016-2017 Tucson 1.6 turbo with the 7-speed dual-clutch. P0507 filed under the transmission: engine and transmission software, or engine software alone, depending on the transmission computer's software ID — and a double clutch as well when that ID ends in 0 to 8. 🟢 Lotus TSB 131-25003, 2024-2025 Emira four-cylinder: a sequence of Sport or Track, brake and parking-brake selections raises the idle to 1,100 rpm and sets P0507 after about four seconds; the dealer clears it and explains the sequence. 🟢 Mercedes-Benz LI01.00-P-063816, C-Class with the M274: after every start "the engine speed rises and sticks to approximately 1200 rpm for a time period of approximately 25 seconds," with "No fault codes" — and "Replacing engine components, the engine control unit or updating the engine control unit software does not remedy the problem"; the fix is a guided bleeding of the high-pressure fuel circuit. 🟢 GM PIP5379 and 5379A, 2016 Camaro SS, and 16-NA-074, 2016 Camaro 6.2 automatics: an idle that hangs high, fixed with engine software. 🟢 GM special coverage 14390, 2012-2014 police Tahoes: idle swings in heat, software. 🟢 Mack and Volvo trucks, 2015-2017: "It is possible that the code is generated due to a software issue, resulting in diagnosis finding no fault."

What the owners report. 35 complaints give software or a computer as the stated cause, and they cut both ways. Two 2016 Soul owners say a high cold idle began after a recall reprogram of the engine computer — one describes the tachometer jumping "to almost 4K" on a cold start — and a 2016 Renegade owner had the computers reprogrammed on two dates with "NO HELP." A 2005 Five Hundred owner paid $100 for a dealer diagnosis, then $150 and $250 at two shops for sensors, and was told the powertrain computer was the likely cause. Software fixes many of these idles; it can also start one.

The cheap cause that gets skipped. The software level. A dealer compares it with the latest in minutes; on the Wranglers, ProMaster Cities, eTorque Rams, Maximas and Frontiers above, that is the repair.

At the shop — say this: "Is the engine computer — and the hybrid or transmission controller, if it has one — on the latest software, and is there a bulletin that names P0507 for my VIN? Please do that before any idle part is ordered."

Route 3 · The relearn — after a cleaning or a new computer — $0 to $150

What it is. The engine computer learns how far the throttle has to open to hold the idle. When the throttle is cleaned or the computer replaced or reprogrammed, that learned value no longer matches the part, and the idle runs high until the computer learns again — on some cars by itself after driving, on others only with a scan-tool procedure.

What the documents say.

🟢 GM PIP4578B, V8 trucks, SUVs and cars from 2006 to 2018 — Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, Camaro, Corvette and others. "As carbon builds up in the throttle body of a high mileage vehicle, the ECM/PCM learns to compensate by increasing the throttle plate angle." Clean the throttle without the idle learn reset and "the ECM/PCM may continue to compensate for previous carbon build up, causing it to return with a similar concern as well as DTCs P0121, P0506, and/or P0507." The reverse is also true: "if the ECM/PCM of a high mileage vehicle is replaced and/or reprogrammed without performing the Throttle/Idle Learn outlined in SI, the ECM/PCM may no longer compensate for existing carbon build up in the throttle body." GM's order is to diagnose first — "If SI diagnosis does not isolate the cause of this concern, inspect the throttle body bore and plate for obvious carbon build up" — then clean and reset.

🟢 Nissan NTB21-049, 2018-2021 Kicks and 2020-2021 Versa. "The MIL is ON and DTC P0101 (MAF SENSOR) and/or P0507 (ISC SYSTEM) is stored in the ECM." The steps are a 12-volt battery test and charge or replacement, erasing the codes, then an idle "for a minimum of 20 minutes" with the outside air above 40°F and the coolant above 175°F, and then: "Perform the Idle Air Volume Learning (IAVL) using the CONSULT-III." No engine part is replaced; the only part the procedure may replace is the 12-volt battery, and the bulletin prints 0.6 hours when the battery is not replaced.

🟢 Audi 2054025/1, 2019 A6 and A7 3.0: a throttle body adaption, no part. And the Nissan reprogramming bulletins in Route 2 end with the same learn. 🟢 Acura 15-038, 2015 TLX V6: the car "idles high" because "The idle learn is unable to relearn its parameters when the CAN system is interrupted during an ECM, TCM, or control unit update"; an earlier Acura dealer message traces the same loss to an instrument-cluster reflash. A software update unrelated to the engine can wipe the learn. 🟢 GM emission recall 14110, 2013-2014 Spark 1.2: with the PCV valve, dealers "clean the throttle body, clean the throttle plate, and relearn the idle," free "regardless of mileage, age of vehicle, or ownership."

What the owners report. A 2001 Infiniti I30 owner's shop replaced the idle air control motor and the engine computer for P0505 and returned the car with the same code — "THE MECHANIC SAID IT WOULD NOT RELEARN IDLE AND TO DRIVE IT AROUND AND SEE IF THAT WOULD HELP" — while the owner rode the brake to hold it. The Infiniti dealer replaced both parts again and traced the failures to leaking fluid-filled engine mounts on the same circuit — a repair the owner puts at over $3,000, on top of the first shop's bill.

The cheap cause that gets skipped. The relearn itself. It is part of GM's and Nissan's procedure, not an extra — and it is the difference between a $15 cleaning that works and one that sets P0507.

Fix it yourself — the honest split. Cleaning a throttle bore with the engine off, following the maker's procedure, is a driveway job on many cars. The relearn is the part that is often not: on Nissans it is a timed scan-tool procedure with temperature conditions, and on many GM vehicles it needs a scan tool. If the idle is high after your cleaning, the relearn is the first thing to do, not a new throttle body.

At the shop — say this: "The throttle body was cleaned (or the battery or computer was replaced) before this started. Can you perform the idle relearn for this engine and tell me the learned idle airflow before and after, before we talk about parts?"

Route 4 · An air leak the computer cannot close — $10 to $1,600

What it is. The engine takes in air the computer did not meter: through a vacuum hose, a crankcase ventilation valve or breather, an intake gasket, or an oil filler cap that is not sealed. At idle, when the throttle is nearly shut, that extra air is a large share of the total, and the idle climbs. In the documents below, P2172, P04FC or P2279 come with it.

What the documents say.

🟢 Stellantis STAR case S2105000002, March 2021. "Symptom/Vehicle Issue: ESC ABS MIL light on DTC's P0507, P04FC, P2172 set." The case lists checks rather than a finding: "Inspect the vacuum hose connections at the vacuum pump and intake manifold quick release connectors," push each one until it clicks, inspect the seals — "Replace the vacuum hose if damage is found." It names no vehicle. 🟢 Stellantis STAR case S2008000159, filed by NHTSA under 2019-2020 Ram 1500 and picturing a 5.7-liter engine, names P0507 and points technicians at the vacuum hose connections "at the rear of throttle body": "Secure any loose hose connections and ensure proper routing of vacuum line. No parts required". 🟢 Mercedes-Benz LI09.20-P-058236, AMG M156: "Engine diagnosis warning lamp lights up, increased idle speed" from "Internal leakage in intake manifold in area of intermediate plate."

🟢 Audi 2040644/1, 2013-2016 S6, S7, RS 7, A8 and S8 with the 4.0T. A whistle at idle with P2279 and "DTC P0507 (Idle control system RPM higher than expected)": "A leak in the crankcase breather module (pressure regulating valve) can cause this condition." The test is whether the sound changes when the oil filler cap is opened.

🟢 Audi 2070915/1, 2.0 TFSI models from 2021 to 2025, years varying by model. "• P050700 – Idle Control System RPM Higher than Expected." — "Possibly caused by an incorrectly installed oil filler cap." The repair is to clean the contact surfaces and seat the cap. The March 2026 revision keeps P050700 in its title but no longer lists it among the codes found.

🟢 Jaguar SSM74375 and Land Rover SSM74374, 3.0 V6 and 5.0 V8 gasoline engines. "Air leak from the right hand camshaft cover assembly due to a split diaphragm within the pressure control valve." The codes are "P2187, P2189, P0505, P0507," and the repair is a kit, not a camshaft cover. 🟢 Land Rover and Jaguar technical note, 2019-2022 models with the AJ20-P6: "Positive Crankcase Ventilation breather membranes failing from a combination of mechanical stress and chemical attack from blow by gases," with P0505, P0506 or P0507 — and "Please do not order the full breather cover assembly (LR164405/AJ814231), please order the Lower-Level Repair Kit (LR166809/AJ814239)".

What the owners report. Nine complaints give an air leak as the cause. A 2021 Range Rover Velar owner with P0505 and P0507 was told the ventilation assembly and the purge valve had failed — the same ventilation part the owner says was recalled and repaired under the previous owner — and paid $1,600. A 2004 Santa Fe owner replaced intake gaskets, vacuum hoses, the idle valve and the throttle sensor, and none of it helped. A hose or gasket is usually a small bill; a breather or valve-cover repair is not.

The cheap cause that gets skipped. The oil filler cap and a listen at idle. On the 2.0 TFSI Audis above, the cap is the first check; on the Stellantis cases, the first check is whether each connector clicks and each hose is seated.

Fix it yourself — what to check. With the engine idling and warm, listen along the intake and the valve covers for a whistle or hiss; lift the oil filler cap briefly and note whether the idle or the sound changes; check that every vacuum hose you can reach is seated and not cracked.

At the shop — say this: "Before a throttle body, can you smoke-test the intake and check the crankcase ventilation and the oil filler cap? What are the fuel trims at idle?"

Route 5 · The throttle body, idle valve or actuator — $256 to $1,204

What it is. The part that meters idle air is worn, sticking or failing: an idle air control valve stuck open on an older car, a throttle plate that sticks, or a failing electronic throttle actuator. This is the route most quotes start with, and in the documents it is the one that comes last.

What the documents say. 🟢 Mazda's multi-model service tip for engines with an idle control valve makes replacement conditional: only after normal diagnosis fails to isolate the cause, and only if the valve is stuck open. 🟢 Lotus's Emira bulletin lists "an air intake leak or throttle sticking" among the causes to eliminate first. 🟢 Kia campaign SC202, some 2021 Sorentos built 9 September to 3 December 2020: in park, "a potential higher than expected idle RPM condition may occur due to a mispositioned internal component in the pedal assembly"; "brake pedal application reduces the RPM to idle." The dealer replaces the accelerator pedal, free, and no code is named. 🟢 Nissan recall 26V-081, filed in February 2026, covers certain 2024-2025 Rogue models with the 1.5-liter VC-Turbo, 318,781 in NHTSA's acknowledgement: "The gears in the electronic throttle body assembly may break," which "can cause a loss of drive power." Dealers reprogram the engine computer and inspect and replace the throttle body as necessary, free. Nissan's March 2026 owner letter says the throttle chamber is replaced "If a specific DTC is detected," without naming it, and offers reimbursement to owners who already paid to replace it because of rough running or a warning light. The dealer bulletins name the codes: P2101 and P2119, not P0507.

What the owners report. 84 complaints give a throttle body, idle valve, throttle sensor or pedal sensor as the cause. A 2003 Avalon's idle ran between 2,500 and 3,000 rpm from a cold start until Toyota replaced the idle control motor for $669 less a $99 discount; "THAT SERVICE SOLVED THE PROBLEM." A 2006 Focus owner had a sticking throttle cleaned under warranty, then paid over $500 for a new one, and saw it stick again a year later. A 2008 Malibu's new $550 throttle body was followed half an hour later by an idle between 1,500 and 3,000 rpm in park, and a car that accelerated to 20 mph on its own when the brake was released — the throttle body had been replaced for reduced engine power, not for an idle. A 2023 Rogue's dealer replaced the throttle actuator and gaskets on a $1,204.20 invoice with P0507-00 stored; the owner writes that the invoice links the code to a fractured gear in the throttle actuator, the subject of recall 26V-081 — which in the documents we went through covers 2024-2025 Rogues, not 2023.

The cheap cause that gets skipped. A sticking throttle can be a dirty one. The cleaning and relearn of Route 3 cost a fraction of a throttle body, and GM's procedure does them before any part.

At the shop — say this: "What test shows the throttle body or idle valve is at fault — not dirty, not mis-learned? Did you clean and relearn first, and is there a bulletin or recall for my VIN?"

Is anything covering P0507 in September 2026?

The status column is our own calculation from the terms printed in each document, as of September 2026 — not a statement by the manufacturer. Check the exact VIN.

No coverage extension names P0507. In the 168 documents we went through, no maker extends coverage for the code. The software bulletins are repairs under the vehicle's existing warranty; outside it, the owner pays for the flash. Several documents in this set print a warranty term for the work they describe — Audi's P050700 bulletins 2053040/3, 2054025/1 and 2060075/1 and /2 (claim type 1E1, up to 8 years or 80,000 miles), GM's 21-NA-219 (8 years or 80,000 miles), Mazda's 01-005/14 under the federal emission warranty, Lexus's L-SB-0032-25 (7 years or 70,000 miles in California), Hyundai's 26-01-021H (8 years or 80,000 miles) and Toyota's and Scion's bulletins (96 months or 80,000 miles). Whether an emission warranty pays for a throttle body or an engine computer depends on the part and the vehicle; ask the dealer to check it by VIN.

What 1,241 complaints about a high idle show

PulsCar went through every complaint our searches matched in NHTSA's file — naming P0505, P0506 or P0507, including spellings with a letter O, a space, a suffix or a bare number, or using a high-idle wording: 1,241 complaints. The first search, built on phrases such as "high idle" and "idles high," found 365. Before writing, a second, independent search of the same file looked for what the first had missed — "the idle is high," "races at idle," an rpm figure next to "at a stop" or "in park," "idol" and "ideal" for idle — and found 876 more; all were added and handled the same way. Each complaint was sorted twice, independently, by the same written rules (the sorting rules), fixed before the sorting started; the two sortings matched on the category for 1,160 of 1,241 (93%), and on whether the car moved by itself for 1,213 (98%). Every difference was settled by the written rules, and the published file carries both original sortings, the final one, and which search found each complaint.

467 of the 1,241 turned out not to describe a high idle — an idle that hunts up and down without going high, an engine revving while a transmission slips, acceleration at speed that never became a high idle at a standstill. That leaves 774.

The code is rare; the symptom is not. Only 26 of the 774 name an idle code — P0507 in 21, P0505 in 7 and P0506 in 2, some naming two. In 183, the owner says the check engine light came on or names a code of any kind. Most owners describe what they felt: a tachometer at 1,500, 2,000 or 4,000 rpm at a light, a car that would not settle, a pedal they had to stand on.

No cause is stated in about two thirds. 276 describe a car that moved and 230 a high idle, with no cause stated — 506 of 774. The throttle group, 84, is the largest single named cause, but 140 name something else: a transmission, charging, cooling or a module. That is the complaint file's version of what the documents say — the throttle body is one answer among several.

The makes and the years. Ford leads with 146 of the 774, then Hyundai and Toyota with 63 each, Chevrolet with 60, Jeep with 51, Honda with 50, Subaru with 42, Nissan with 40, Kia with 36 and Dodge with 32. The Outback is the most frequent model with 25, then the Taurus with 24, the Focus with 23 and the Sonata with 20. The median model year is 2014; of the 523 complaints that give a mileage, the median is 67,190 miles. By year received: 95 in 2015, 109 in 2016, 66 in 2017, 92 in 2018, 90 in 2019, 70 in 2020, 50 in 2021, 46 in 2022, 42 in 2023, 33 in 2024, 40 in 2025 and 41 in 2026 to 21 September.

Counting complaints, not cars. Some owners filed more than once, and a complaint records what the owner experienced and was told, not an established cause.

What do 1,241 federal complaints about a high idle show, and how often does the car move? In PulsCar's reading of every complaint our searches matched for P0505, P0506, P0507 or a high idle, each complaint was sorted twice, independently, by the same written rules, and the two sortings matched on the category for 1,160 of 1,241 (93%). 774 describe an engine idling or racing faster than it should at a standstill. In 368 of them the car crept hard, lurched or accelerated by itself, and 51 describe a crash — in 48 of those the car moved by itself, mostly while parking or waiting at a light. The complaints point to a throttle body, idle valve or throttle sensor in 84, a computer or software in 35, an air leak in 9 and another cause in 140, and state no cause in 506. Only 21 complaints name P0507 by number.

When the car moves: the safety side of a high idle

368 of the 774 complaints describe a car that moved. At idle, an automatic transmission in gear pulls the car forward with a force that rises with engine speed. At 650 rpm the brake holds it easily; at 1,500 or 3,000 rpm the car creeps hard, lurches when it is shifted into gear, and needs a firm foot to hold. Ford accounts for 69 of the 368, Toyota for 48, Honda for 35 and Hyundai for 33. In 276 of the 368, no cause is stated.

51 describe a crash. In 48 the car moved by itself; in the other three the owner was struck by another vehicle. Most began at a standstill or at parking speed. A 2013 S60 owner pulling into a parking space: the car "BEGAN TO ACCELERATE ON ITS OWN AND REACHED VERY HIGH RPM," jumped the sidewalk and hit the building. A 2006 Ridgeline owner: "THE TRUCK STOPPED AND THEN SUDDENLY THE ENGINE REVVED UP AND THE TRUCK TOOK OFF AT HIGH SPEED FOR 15 FEET SLAMMING INTO A BUILDING." A 2014 Impreza idling at a red light with the brake pressed hit the car ahead, and the owner was treated for a neck injury. A 2015 Sonata owner writes that the idle "NEVER GOES BELOW 1200-1300 RPM" and that the car took off in a parking lot with the shifter in park — $6,700 in damage.

What a complaint can and cannot show. These are owners' accounts, many never diagnosed; they cannot say whether each event was a mechanical fault, a software fault or a foot on the wrong pedal.

What the documents say about the same moment. 🟢 Mazda's bulletin for 2012-2014 Mazda3, 2014-2015 Mazda6 and 2013-2015 CX-5 with the six-speed automatic describes a high idle, an engagement shock or a forward lurch when stopped in drive, which "may occur when the customer depresses the brake pedal and makes contact with the throttle pedal simultaneously" — fixed with software, with the note: "It is not necessary to order a PCM part for this repair procedure." 🟢 Stellantis's 09-003-14 for a 2014 Cherokee treats a cold idle over 1,100 rpm as the setting for a boom when shifting into reverse. A high idle and a transmission in gear are a combination that makers write about.

What to do. Keep a firm foot on the brake at every stop and before every shift into gear, set the parking brake when parked, and have a car that pushes against the brake towed rather than driven. A high idle that makes the car hard to hold is not a light to live with.

What owners say they paid

We collected the dollar figures for idle-related diagnoses, repairs and quotes from the 774 complaints, leaving out vehicle prices, towing and loan balances, and the full list with ODI numbers is published. Grouped by what they paid for:

A diagnosis. $100 at a Ford dealer for a 2005 Five Hundred, and $100 offered for a 2007 F-150; $100 at a shop that could not find the cause on a 2019 Mazda3; $105 for a 2009 Spectra; $150 asked for a 2013 Escape; $161 at an Infiniti dealer for a 2007 G35; $275 quoted per test for a 2013 Q5; $300 for a 2023 Rogue in limp mode, P0507 among its codes.

A throttle part. $256.30 for a 2009 Spectra's idle air control valve; $278 for a 2004 Crown Victoria's throttle air by-pass valve after the engine raced; $365 for a 2006 Outback's throttle sensor; over $500 for a 2006 Focus's throttle body; $550 for a 2008 Malibu's; about $600 for a 2012 Ram 1500's accelerator pedal sensor, which "SEEMS TO HAVE FIXED IT"; $669 less a $99 discount for a 2003 Avalon's idle control motor; over $800 quoted for a 2011 Fiesta's throttle body after a cooling fan costing over $500 did not help; and a $1,204.20 invoice for a 2023 Rogue's throttle actuator and gaskets, $1,104.20 of it paid by an extended warranty.

A computer, a module or an air leak. Up to $1,200 quoted for a 2004 Freestar's engine computer; $1,200 quoted for a 2011 Liberty's failing power distribution module, which the owner links to a high idle; $1,600 for a 2021 Velar's crankcase ventilation assembly and purge valve; $3,400 for a 2004 Ram 3500's engine computer after the shop found P0606 — "REPLACED ECM/PCM CONTROL MODULE TRUCK RUNS FINE."

Parts before the cause. On a 2001 I30, a first shop replaced the idle air control motor and the engine computer without finding the cause; the Infiniti dealer replaced them again and found leaking engine mounts on the same circuit, a repair the owner puts at over $3,000 on top of the first bill. A 2019 Mazda3 owner paid $1,600 at a second shop and saw the problem return. A 2013 Sonic's $1,400 radiator did not stop the racing idle, nor a 2020 Sienna's $725 fuel-system cleaning the rough one, and a 2009 Mazda3 owner put about $500 into injectors and sensors before the cause turned out to be the clutch.

Not a repair. $6,700 in damage after a 2015 Sonata took off in park; $3,500 in body damage on a 2014 Sierra 2500; $2,300 after a 2016 CX-5 crashed at home.

Why P0507 comes back after a repair

Because the relearn was skipped. 🟢 GM's PIP4578B is explicit: a cleaned throttle without the idle learn reset, or a new or reprogrammed computer without the throttle and idle learn, can bring the concern back with P0121, P0506 and/or P0507 on a high-mileage V8. The part was fine; the learned value was wrong.

Because the part was right and the cause was elsewhere, or was software. An air leak lets in air a new throttle body cannot meter; 🟢 Audi's 2053040 says not to replace the throttle body when the fault is a stored setting; 🟢 Stellantis asks for the software check "prior to replacing any components" related to P0507. Owners report the pattern: the 2001 I30 above had its idle motor and computer replaced twice, and only at the second replacement did the dealer find the leaking engine mounts.

Why does P0507 keep coming back after a throttle body cleaning or replacement? In PulsCar's reading of 168 manufacturer documents and 1,241 federal complaints, the reason the makers document most directly is a relearn that was never done. GM's PIP4578B says that on high-mileage V8s the engine computer learns to open the throttle wider as carbon builds up, so cleaning the throttle without an idle learn reset — or replacing or reprogramming the computer without the throttle and idle learn — can bring back P0121, P0506 and/or P0507. Nissan ends its P0507 bulletins for the 2016 Maxima, 2020-2021 Frontier and 2018-2021 Kicks and 2020-2021 Versa with an idle air volume learn. Stellantis asks for the latest engine software before any idle part on 2018-2019 Wranglers, and Audi says a stored throttle setting, not a defective part, sets P050700 on some models. Before another part, ask for the relearn, the software level and an air-leak check.

Can you drive with P0507?

It depends on what the car does, not on the code. A P0507 with an idle a few hundred rpm high and a car that holds still on the brake is a diagnosis to book this week; drive gently and keep a firm foot on the brake at stops. A P0507 with an engine that races, a car that creeps hard or lurches into gear, or a pedal you have to stand on is a car to have towed — in our reading, 368 of the 774 complaints say the car crept, lurched or accelerated by itself, and 51 describe a crash.

Watch the brakes. Braking against a high idle heats the brakes; a 2003 Avalon owner describes brakes "HEATING UP AND SMELLING FROM FREQUENT USE."

What does not count. A diesel truck or a car with a designed warm-up idle that comes down as it warms, with no code, is Route 1, not a fault.

Should you buy a used car with a P0507 history?

It depends on what fixed it. A receipt for a named repair — a software bulletin, a relearn after a cleaning, a sealed air leak, a throttle body with the relearn done — is a good sign. "Cleared the code" is not.

Four checks before you buy. Watch the tachometer from a cold start to warm idle, with the air conditioning on and off; shift into drive and reverse with a firm foot on the brake, in an open space, and feel for a lurch; ask for the codes and the readiness monitors; and run the VIN for recalls, including 26V-081 on a 2024-2025 Rogue.

Clearing P0507 before an inspection

Clearing the code does not clear the cause. Erasing codes resets the readiness monitors, which need days of mixed driving to complete, and a high idle that is still there will set P0507 again. A car presented with too many incomplete monitors can be turned away or failed.

What works instead. Find the route, fix it, do the relearn if the procedure calls for one, and drive normally for several days before the test.

What a shop actually does with a P0507, checkpoint by checkpoint

Checkpoint 1: codes and data — every code with freeze frame, commanded and actual idle, fuel trims, the learned throttle position.

Checkpoint 2: the maker's normal — the idle tables, if the condition could be a designed raised idle.

Checkpoint 3: bulletins, recalls and software — by VIN, for the engine computer and any hybrid or transmission controller.

Checkpoint 4: air — a smoke test of the intake, breather, oil filler cap and vacuum connectors.

Checkpoint 5: the throttle — carbon, a sticking plate, the idle valve; cleaning, then the relearn.

Checkpoint 6: the part — only now, with the test that condemned it on the estimate.

Three P0507 traps that cost owners the most

Trap 1: a throttle body sold on the code. P0507 names a symptom. Lesson: ask which test condemned the part, and whether software and a relearn came first.

Trap 2: a cleaning without the relearn. GM documents that this alone can set P0507. Lesson: the relearn is part of the cleaning.

Trap 3: a designed idle treated as a fault — or a fault excused as a designed idle. Diesel trucks idle high on purpose in set conditions; a car that pushes against the brake is not doing so on purpose. Lesson: compare the number with the maker's table, and trust the brake pedal over the explanation.

Three P0507 quotes, decoded

These are composite scenarios, not individual customers: each combines details from the documents and owner reports above; the dollar figures are drawn from the ranges on the price ladder above.

Scenario 1: 2019 Jeep Wrangler JL 2.0 eTorque, 58,000 miles, P0507 with the check engine light, quote for a throttle body. The owner asks the dealer to check the engine computer's software first, as Stellantis's parts notice says. The flash bulletin for the 2019 applies; after the reprogram and the brake and hybrid controller updates, the code does not return. Lesson: on a vehicle with a bulletin, the software check comes before any idle part.

Scenario 2: 2012 Silverado 1500 5.3, 160,000 miles, throttle body cleaned at home, idle at 1,100 rpm and P0507 the next week, quote for a new throttle body. A second shop reads GM's PIP4578B, re-cleans the bore, performs the idle learn reset, and the idle settles. The bill is inside the $80-$150 cleaning range. Lesson: the relearn finishes the cleaning.

Scenario 3: 2021 Audi Q5 2.0 TFSI, 34,000 miles, rough idle, oil near the filler neck, P050700 with P227900. The technician finds the oil filler cap not seated, cleans the surfaces, reseats it, and clears the codes. Lesson: the cheapest part on the engine can set the code.

The P0507 plan: 10 minutes, today, this week

10 minutes: note the idle speed and the conditions; read every code; check the oil filler cap; think back to any cleaning, battery or computer work.

Today: if the car pushes against the brake, have it towed. Otherwise, run the VIN at nhtsa.gov/recalls and ask a dealer for the bulletins and campaigns for the vehicles in the triage box — the Stellantis flashes, Nissan's NTB16-057, NTB21-049 and NTB21-080, Kia's SC202, and recall 26V-081.

This week: have the software level checked, the relearn done if the throttle, battery or engine computer was touched, and the intake smoke-tested before any part is quoted — and get the test that condemned any part written on the estimate.

Sources and documents

Primary documents only. Where a claim in this guide is marked 🟢, it rests on one of the items below, and the reference is given so you can pull the document yourself. Claims marked ⚪ are shop-price estimates carried from PulsCar's repair guides — estimates, not measurements from a dataset we own.

1. Stellantis flash bulletins 18-048-15 REV. A, 18-030-16, 18-008-16 REV. B, 18-063-17 and REV. A (ProMaster City); 18-034-19 REV. A, 18-018-20 and REV. A, 18-144-22, 18-037-19 REV. A, 18-022-20 and REV. A, 18-114-22 (Wrangler JL); 08-144-23, 08-145-23 and 08-037-21 (hybrid controller); 18-117-16 (Caravan); 09-003-14; the Dart, 200 and Cherokee flash families 18-006-15, 18-023-16, 18-022-17, 18-005-15 and 18-004-16; the 3.0 diesel, 6.4 and 6.7 flashes 18-001-22, 18-002-22 REV. A, 18-060-24, 18-035-22 REV. A, 18-018-23, 18-088-22, 18-068-23, 18-089-22, 18-090-22, 18-074-25, 18-075-25 and their REV. A. Stellantis parts notice 9004112; STAR cases S2105000002, S2008000159 and S2509000007.
2. GM PIP4578B; PIP4912B to G; PIT4529D and E; PIP5172, A and B, and special coverage 14390; 16-NA-074; 16-NA-276; 17-NA-108 versions 1 and 2; 21-NA-115 versions 1 and 4; 21-NA-219; PIT6240; customer satisfaction program N202298330; service updates 32340A and B; PIP5064 to PIP5064C; PIP5947C; PIP5379 and 5379A; emission recall 14110.
3. Nissan and Infiniti NTB16-057, NTB21-049, NTB21-080, NTB15-004, ITB15-003; recall 26V-081 (acknowledgement letter, owner letter and dealer bulletins).
4. Audi 2053040/2 and /3, 2060075/1 and /2, 2054025/1, 2040644/1, 2070915/1 and /2. BMW SI B12 10 17; MINI SI M12 03 17. Mercedes-Benz LI07.61-P-069057 (G63), LI01.00-P-063816 and LI09.20-P-058236. Lotus TSB 131-25003 and 2017/07. MINI SIM 12 01 24. Acura 15-038 and dealer message PUD 14-054. Harley-Davidson M1559.
5. Hyundai 21-AT-005H; 26-01-021H and limited coverage LA16. Jaguar SSM74375; Land Rover SSM74374, SSM72478, LTB00855NAS1 and the AJ20-P6 technical note. Kia PITSTOP PS354 and campaign SC202. Lexus L-SB-0032-25. Mazda 01-005/14, 01-007/13 and the idle control valve service tip. Toyota T-SB-0125-18; Scion S-SB-0021-15. Ford special service messages 49430, 50636, 51691, 47231, 47704, 48761 and 50548; bulletins 16-0047, 15-0070, 17-0033, 22-2124 and 22-2170; recalls 20V-795 and 25V-793. Volvo Cars technical journal 37422. Mack and Volvo trucks K73120837, K03539946, KC-187 and KC-188.
6. PulsCar analysis of NHTSA public data, September 2026: 1,241 complaints our searches matched for an idle code or a high idle, sorted twice independently, with both original sortings and every settled difference; owner-reported amounts; the document list with read status. How we did it.

For the neighboring pages: throttle body replacement cost, car shaking when idle, car vibration at idle, car running rough, car stalls while driving, the P0101 guide and the code index.

Methodology. The complaint set is every complaint in NHTSA's file that our searches matched for P0505, P0506 or P0507 (with spellings using a letter O, a space, a two-character suffix or a bare number after "code") or a high-idle wording — 1,241 in all, 774 of them relevant: 365 from our first phrase search and 876 added by a second, independent search for wordings the first one missed. Every complaint was sorted twice, independently, by the same written rules, fixed and dated before the sorting (the two sortings matched on the category for 1,160 of 1,241, 93%, and on moved-by-itself for 1,213 of 1,241, 98%), and every difference was settled under written rules published with the data. Every complaint quoted, and every dollar figure, was checked against the full complaint text. Coverage status is our computation from the printed terms, as of September 2026. Nothing here is a failure rate.

Prices verified July to September 2026 in the repair guides they are carried from, and reviewed quarterly. Technical documents verified September 2026: the 168 documents gone through in full in our published list — among them GM PIP4578B and PIP4912G, Stellantis 18-114-22, 08-037-21 and parts notice 9004112, Nissan NTB21-049 and NTB16-057, Audi 2053040/3 and 2070915/1 — and Nissan recall 26V-081 and Ford recalls 20V-795 and 25V-793.

Had a P0507 fixed by a relearn, a software update, an air leak or a throttle body — or talked out of one? Email [email protected] with the vehicle, mileage and outcome.