P0130 and P0131 in 2026: Sensor, Wiring, Exhaust Leak or Something Else — What 346 Documents and 1,355 Complaints Show

P0130 and P0131 are the codes for the oxygen sensor in front of the catalytic converter, and the quick answer is "bad sensor." Many of the papers name a different cause first.

P0130 and P0131 — printed by Bentley as "O2 Sensor Circ.,Bank1-Sensor1 Malfunction" and "O2 Sensor Circ.,Bank1-Sensor1 Low Voltage" — say that the engine computer does not like the signal or the circuit of the oxygen (air-fuel) sensor ahead of the catalytic converter on bank 1; they do not say why. That sensor tells the computer whether the mixture is rich or lean. Its neighbors are P0132 (high voltage), P0134 (no activity), the bank 2 twins P0150 to P0154, and the wide-band codes P2195 to P2198 and P2A00 to P2A01; we cover them only where the documents tie them to the same sensor. P0133 (slow response) has its own page, and the heater and rear-sensor codes are on P0135, P0137 and P0138. We do not repeat them.

A warning about the search words: only 1 complaint in NHTSA's whole file from January 2015 to early October 2026 prints P0130, and 12 print P0131 (one writes it without the P, one with a letter O). Owners write "O2 sensor," "air fuel sensor" or "O2 censor"; the code lives in the dealer papers. So the 1,355 complaints we sorted are the ones that name an oxygen-sensor code or use oxygen-sensor wording; 1,273 of them describe a fault on the owner's car, and this page says "complaints that describe an oxygen-sensor fault," never "P0130 complaints."

We went through NHTSA's index of manufacturer communications for papers whose summary names an oxygen or air-fuel sensor code or uses oxygen-sensor wording: 850 entries. The index summary is not a source, so we used it only to decide what to read. We did not read all 850: we set aside 514 that mention the sensor only in passing, concern only the rear sensor or are not passenger-car papers, and a second search added 53 more entries we had missed. That left 385 files, 346 distinct documents once exact copies are set aside; we read 227 in full and compared the other 158 line by line. Of the 385 files, 16 print P0130 (six of them as P013084, Mercedes' form) and 35 print P0131.

We also sorted 1,355 complaints from NHTSA's file, received from January 2015 through early October 2026, that name an oxygen-sensor code or use oxygen-sensor wording. Each was sorted twice, independently, by the same written rules; the two sortings matched on the main category in 82% of them, and the rest were settled by written rules. 1,273 describe an oxygen-sensor fault, warning or repair on the owner's car; 82 do not. Only about 100 of the 1,273 (8%) use words for the position of the sensor (about 60 for the upstream or front one, about 50 for the downstream or rear one, 12 for both). Most owners do not say which sensor.

Claims marked 🟢 rest on a document in the Sources section; ⚪ marks shop-price estimates from our repair guides. Owner-reported figures are what people told NHTSA, published with ODI numbers, and every complaint count comes from the 1,355 complaints sorted twice and published.

Words on this page. Engine computer (ECM, PCM): the car's computer. DTC: a trouble code. Bank 1: the side of the engine that holds cylinder 1 (makers disagree on which). Sensor 1: before the catalytic converter; sensor 2: after it. Bulletin (TSB): a maker's repair instruction to dealers, not a recall. Flash: a software update. Relearn: teaching the computer its stored values again. ODI number: NHTSA's complaint number.

What P0130 and P0131 say: a circuit out of range, not a verdict on the sensor

What the codes report. 🟢 Bentley prints "P013000: O2 Sensor Circ.,Bank1-Sensor1 Malfunction" and "P013100: O2 Sensor Circ.,Bank1-Sensor1 Low Voltage" (2075331/4). GM prints P0131 as "HO2S Circuit Low Voltage Bank 1 Sensor 1" (18-NA-009), Chrysler as "P0131 1/1 02 Sensor Shorted To Ground" (25-004-12). Mercedes prints P0130 only with a two-digit suffix: "P013084 Oxygen sensor 1 (cylinder bank 1) has an electrical fault. There is a signal below the permissible limit value." (LI54.18-P-057927). The word that matters is circuit, malfunction or low voltage: the computer is judging the signal, not naming a cause.

What you feel. Sometimes nothing but a light. 🟢 GM's paper for P0132 (a voltage spike in the computer of 2016-2017 LTG cars) says "This set code will not impact the vehicle performance." (16-NA-266), and Lotus lengthened the delay before the light comes on, to avoid "an unnecessary booking" (2017/07). Among the owners who wrote to NHTSA, the bad cases are common in this file: 459 of the 1,273 complaints (36%) describe a stall, a loss of power, a limp mode, a rough idle or a surge, and 57 (4%) an engine that would not start, started hard or died soon after starting. These are complaints, not a failure rate.

Is P0130 or P0131 usually a bad oxygen sensor, and how often does a new one fix the car? PulsCar sorted 1,355 federal complaints from 2015 to early October 2026; 1,273 are about a fault on the owner's car and 13 print P0130 or P0131. A sensor replacement is the stated repair in 233 of the 1,273, and in 124 more the owner says a new sensor did not cure it and no other cause was named (those 124 are inside the 543 that name no cause). The documents are less sensor-centered: the printed causes include contact resistance, tin-plated terminals, a harness rubbing on a hose, fluid on the wiring, water, loose intake bolts and software. Ask about wiring and your VIN before you pay for the part. These are owners who wrote to NHTSA, so the shares are not failure rates.

First: which code, which sensor, which bank? One sensor, many labels

Read the exact code, and the whole list, before you buy anything. The same sensor carries different labels in different makers' papers, and the neighboring codes point to different fixes.

Two cautions. 🟢 Banks are named differently. Ford's 3.5L GTDI bulletin prints "DTC P2195/P2626 - bank 1 sensor 1 HO2S (Right Side)" (17-2124), while Acura prints the rear A/F sensor as "[bank 1, sensor 1]" for P0134 (15-035 for the RLX, 15-007 for the MDX). Check which side your maker means. And Porsche's 2018 bulletin for the 911 GT3 family says the computer files the upstream-sensor codes under the wrong bank: "If at least one of these fault codes (P0133/P0153) is entered in the DME control unit, both" upstream sensors must be replaced (89/18).

The maker atlas: who prints a connector fix, a harness repair, a software update or a sensor

The papers split by maker, and the split is the most useful thing in them: a Ram diesel with a 2011 harness and a Ford Transit that took water over the engine are on different roads even when the code is the same. Document numbers link to the NHTSA PDF; years, engines and build dates are as printed.

The surprise is that no paper we read that prints P0130 or P0131 says to replace the sensor and stop there, except Land Rover's SSM72448, which gives no other step. 🟢 At least five makers print a plug, a terminal or a harness (Chrysler, Mercedes, GM, Ford, Bentley), Land Rover and Ford print water, and several print software. Only the Land Rover, Infiniti and Nissan papers that print the sensor as the fix list P0130. Land Rover's LTB00671, Nissan's NTB12-085b and, for cars with a matching computer part number, Infiniti's papers add a software step; Land Rover's SSM72448 (cause "yet to be identified") only asks the shop to keep the replaced sensor for return. The Ford, Toyota, VW and Audi ones are for neighboring codes.

The do-not-replace lines: what the papers tell a shop not to buy first

🟢 Chrysler, for the 6.7L diesel pickups: "Do NOT replace any parts prior to performing this bulletin and the Verifications test below." (25-004-12). 🟢 Mercedes, in Version 1 (2013) and again in Versions 5 and 6, not in Version 4: "Please do not replace any components!" (Version 1, Version 5, Version 6). 🟢 GM, for the related code P015B: "Note: Do Not replace the O2 sensor until the latest ECM calibration has been validated." (17-NA-155). 🟢 Land Rover: "please do not change oxygen sensors until all other possible reasons for the fault have been investigated." (SSM37361). 🟢 Infiniti: "DO NOT replace A/F sensors at this time. If needed, replace A/F sensors after ECM reprogramming." (PC185) and, for the 2015 QX80, which limits the count rather than the start: "Do NOT replace both A/F sensors if the stored DTC(s) are for only one bank." (ITB15-033).

Papers that do say replace the sensor (Ford 17-2124 and 14-0129, Infiniti ITB11-054a, Land Rover LTB00671, Audi 2014825/4, Toyota T-SB-0001-10, Porsche 89/18, GM 18-NA-009 when fluid is found) name a code and a model first (the Sienna campaign is for the rear sensor: its dealer letter lists P0037 and P0136 to P0139), and several order the steps: reprogram, then replace (Nissan NTB12-085b); update the software, then replace (VW 2038575). A car that is not in a paper like these has no printed reason to start with a new sensor.

The 10-minute check

Everything here is our advice unless a maker is named; none of it needs more than a code reader.

1. Write down the whole code list. A P0131 with P0171 and P0106 is one of the sets GM ties to loose intake bolts on some cars (PIP5529B); P0132 may be secondary (Land Rover); several sensor codes at once point to a shared plug, harness or fuse (Chrysler, Bentley).
2. Write down which sensor and bank, and ask the shop which side that is on your engine. Ford's bank 1 on the 3.5L GTDI is the right side; Acura prints the rear A/F sensor as bank 1.
3. With the engine off and cool, look at the plug and the wires: clicked home, dry, rubbing on anything, wet with oil or fluid, chewed? Do not spray cleaner into the plug (Mercedes) or pack it with dielectric grease (Ford's F-Super Duty paper says the sensors "breathe through the wiring strands").
4. Listen at a cold start. A tick that fades as the metal warms can be an exhaust leak ahead of the sensor.
5. Ask the dealer about the VIN (recall, campaign, extension, software).

Six situations, and which is yours

1. A steady light, the car drives normally (free fix or wiring: Routes 1 and 2). Ask for a VIN and software check and look at the plug before parts.

2. A light with stalling, hesitation or reduced power (wiring, leaks, sensor: Routes 2 to 4). Follow the tow rule in the triage box.

3. A light after rain, a car wash or water over the engine (wiring: Route 2). Ford and Land Rover tie sensor codes to water.

4. A light with a fluid leak, oil on the harness or a burnt smell (wiring: Route 2). A burnt smell: pull over safely, switch the engine off, get out and have it towed or inspected.

5. A failed emissions test with no code, or a reader showing "not ready" (free fix or sensor: Routes 1 and 4). Toyota, Lexus and BMW print software for self-tests that never complete.

6. A new sensor that did not help (wiring, leaks, converter: Routes 2, 3 and 5). In 189 complaints a sensor was named or replaced and the owner says the problem came back or was not cured.

The P0130 and P0131 price ladder, from the bottom up

Figures marked ⚪ are estimates from our O2 sensor replacement guide, not quotes; owner figures are what people told NHTSA.

The ladder is a rule of thumb for order, not a forecast; a diagnosis fee is not a repair, and many of the largest figures are quotes, not bills.

The five routes, cheapest first

Each route below is one reason the front oxygen sensor can send a bad signal, ordered by what it costs to rule out, not by how often owners name it. By count the sensor is the biggest single group: 233 of the 730 complaints that are not "no diagnosis" (32%). It comes fourth here because it is the part you pay for, and the papers ask the shop to rule out the others first. Owner counts come from the 1,273 relevant complaints; "came back" means the owner says the same light, code or symptom returned or the repair did not hold. These are owners whose trouble did not end, so no share is a forecast for your car. The 543 complaints that name no cause sit outside the routes.

Route 1 · A free repair: software, recall, campaign or warranty extension — $0 to ask

What it is. The maker has said in writing that a condition exists and will fix it at no charge or under the normal warranty: a computer update, an oxygen-sensor program, or a long extension that lets the sensor itself be replaced free.

What the documents say. 🟢 Acura fixes P0134 and P0154 with software: "The PCM misinterprets the air fuel ratio sensor heater system input" and sets P0134 and/or P0154 (15-035). 🟢 GM's emission recall N182176760, for 2013-2015 Express and Savana cutaways with the 6.0L engine, says the computer "does not adequately diagnose and account for certain types of oxygen sensor degradation or aging", with "no illumination of the malfunction indicator lamp" (N182176760). 🟢 Warranty extensions go further. Jaguar Land Rover: "This extended warranty covers all repairs to, or replacement of, the exhaust system oxygen (O2) sensors on applicable vehicles." (E002), 15 years or 150,000 miles on 2020-2022 models with the 2.0L, 3.0L supercharged or 5.0L gasoline engines (USA).

What the owners report. 16 complaints end at a recall, campaign or software update with no part named, and 7 of them say the problem came back. 276 of the 1,273 (22%) mention a recall, campaign, bulletin or special coverage. The biggest cluster is GM: 55 are 2010-2013 Equinox and Terrain complaints, 27 of them with a recall flag, and GM's special coverage N192287100 for the 2012-2013 models with the 2.4L engine covers sensors and converters damaged by oil consumption, "without illumination of the malfunction indicator lamp (check engine light)" (N192287100). A 2013 Altima owner wrote that the check engine light came on "TWICE FOR REPROGRAM OF OXYGEN SENSOR" and that "IT LOOKS LIKE THEY JUST CLEARED THE SYSTEM AND THE LIGHT AND IT CAME BACK ON WHILE OUT OF TOWN FOR THE SAME PROBLEM." (ODI 10821578).

The cheap cause that gets skipped. The word "bulletin." Most of the papers above are bulletins, campaigns or extensions, not safety recalls, so a recall search on your VIN may show nothing. Ask for a bulletin, campaign and extension check by VIN, with the computer's part number (Nissan and Infiniti list computers by part number).

What you can do. Nothing with tools. Write down the code and what the car did, photograph the reader screen, and do not clear the code before the dealer has read it (our advice).

At the shop — say this: "The light is P0131 (or P0130). Is there a recall, campaign, warranty extension, technical bulletin or software update for the oxygen sensors on my VIN, and does my computer's part number match? I would like that checked before any part is ordered."

Route 2 · The connector, the wiring and what drips on it — $0 under a maker paper, $387 to $4,500 in owner reports

What it is. The sensor is fine and its feed is not: a plug that has lost contact, a pushed-out terminal, a harness rubbing on a hose, a wire chewed by a rodent, or fluid or water soaking the harness.

What the documents say. 🟢 Chrysler and Mercedes put it at the contacts (see the atlas). 🟢 GM: "inspect the engine harness to the Bank 1 O2 sensor for chafing on the A/C hose coupling/connection at the back side of the engine." (PIT5336), and, when fluid is found, "Replace the engine wiring harness due to P/S fluid contamination." (18-NA-009). 🟢 Ford, for the 2014-2016 Transit Connect: "Visually inspect the 12A581 engine harness" for chafing (16-0163); for the 2020 F-Super Duty, "inspect for moisture and/or corrosion on the pins of the sensor or the wiring harness." (20-2380). 🟢 Chrysler's 2023 case record for a P0152 asks to "look for pushed-out or spread terminals" (S2308000118).

What the owners report. 61 complaints (5%) end at a wire, connector, fuse or harness; 10 describe a stall and 9 say it came back. 7 of the 20 fire flags among the 1,273 relevant complaints are here. 10 of the 61 mention rodents or chewed wire (some owners blame the insulation; no maker paper we read says so) and 11 oil or fluid in the harness, 7 of them Mercedes. A 2011 Ram 2500 owner wrote "I HAVE REPLACED THE O2 SENSOR 3 TIMES WITHIN ONE YEAR. I HAVE BEEN TOLD THAT THIS IS A COMMON ISSUE AND HAVE BEEN TOLD THAT IT IS THE WRING HARNESS." (ODI 11056284, with codes P241A and P2196). A 2020 Explorer complaint (code P0161, a rear-sensor heater code) reads "Found massive corrosion at connector." and says the maker "does not have pigtail repair kit available and entire harness would be needed to repair." (ODI 11603988).

The cheap cause that gets skipped. The plug, and whatever the harness touches. It is the cheapest rung and the one most often skipped, because the sensor is the part with the code.

Fix it yourself. Look, do not repair: with the engine off and cool, check that the plug is clicked home, dry and not corroded, and that the wires are not rubbing on a hose, a bracket or the exhaust, or wet with oil or fluid (our advice). Splicing is a shop job (our advice; Chrysler's splice procedure warns "Soldering wires alone may cause too much circuit resistance."). A burnt smell: pull over safely, switch the engine off, get out and have it towed or inspected.

At the shop — say this: "Before you replace the sensor, can you show me the plug, the pins and the harness — chafing, fluid, rodent damage, corrosion — and tell me what you measured at the connector?"

Route 3 · Something that fools a healthy sensor: an exhaust leak, a loose sensor, air, fuel or the engine itself — $0 to $1,700

What it is. The sensor reads what is in the pipe. A leak ahead of it lets outside air in; an intake leak, a bad injector, a misfire or burning oil changes the mixture or fouls the sensor; a loose sensor leaks around itself.

What the documents say. 🟢 Toyota (a tip for sensor-2 and converter codes): "Pinholes in the sensor mounting boss, or upstream will introduce unmetered oxygen into the exhaust and give a false (typically lean) reading." (T-TT-0686-22). 🟢 When normal diagnosis finds nothing, GM (20-NA-065, for P0137, P0138, P0171 and others) suggests a leak tester for "small leaks around the O2 sensor embossments and slight cracks in an intake plenum or gasket." (20-NA-065). 🟢 GM's PIP5529B, a preliminary paper, lists P0131 among ten codes that in rare cases, when service information leads nowhere, come from loose intake manifold bolts on engines GM codes LCV, LKW and LTG: "Do not replace the intake manifold gasket unless testing indicates the gasket is leaking after the bolts are torqued." (PIP5529B). 🟢 Infiniti, for a seized sensor: "DO NOT replace the exhaust manifold/catalyst/front tube." (EM09-016a). 🟢 GM's 19-NA-196 says a stall or stumble may be caused by a faulty aftermarket or incorrect upstream sensor (a wrong part, not a fooled one) and adds "Note: Typically, there are no related DTCs." (19-NA-196).

What the owners report. 40 complaints (3%) end at an exhaust leak or a loose sensor: 27 mention a manifold, 11 a pipe or a leak by name, about 4 a stripped thread, a threaded port or a sensor stuck in the pipe; 5 of the 40 say it came back (13%). 172 (14%) end at air, fuel or the engine: 78 describe a stall and 68 say it came back (40%); of the 172, 47 mention fuel (pump, pressure, purge valve, bad fuel), 40 a misfire, plugs or coils, 24 oil consumption, 20 coolant or a head gasket, 18 injectors and about 8 an intake or vacuum leak. A 2013 Terrain owner wrote "CRACKED EXHAUST MANIFOLD WHICH DAMAGED OXYGEN SENSOR. REPLACED BY MIDAS @ 132,863 MILES 11/14/2017 TOTAL COST $664.39" (ODI 11203731). A 2014 Malibu owner wrote "they tell me it was my intake bolts that were loose. They replaced every part PCV valve, MAF sensor, O2 sensor and car still wouldn't run right." (ODI 11581909; P0131 is one of its three codes).

The cheap cause that gets skipped. The leak test. A smoke or pressure test on the intake and on the exhaust ahead of the sensor is the step that would show it before a second sensor is bought, and 189 complaints describe a replaced sensor and say the problem came back. ⚪ Our O2 sensor guide makes the same point: a leak near a sensor lets outside air in and skews the reading.

Fix it yourself. Only the looking: at a cold start, listen for a tick that fades as the pipe warms, and look for black soot streaks at flanges (our advice). Do not touch a hot pipe. If you smell exhaust inside the car, pull over, switch the engine off, get out into fresh air and have it towed or inspected before you drive on (our advice).

At the shop — say this: "Please leak test the intake and the exhaust ahead of the sensor before it is condemned, and show me that the sensor is tight, its seat is sound and the intake bolts and manifold are not leaking."

Route 4 · The sensor itself — $150 to $500 installed

What it is. The sensor has failed: its heater, its element, the wire inside it, or it is the wrong or a poor part. Water, oil, coolant or rich running can have damaged it; then a new one only buys time.

What the documents say. 🟢 Ford, for the 3.5L GTDI Explorer and F-150 (P2195, P2197, P2626, P2629): "(1). Yes - replace the affected heated oxygen sensor (HO2S). Refer to Workshop Manual (WSM), Section 303-14." (17-2124). 🟢 Infiniti, 2015 QX80: "Replace only the A/F sensors related to the stored DTCs." (ITB15-033). 🟢 Land Rover: "It is very unlikely for both sensors to fail simultaneously." (LTB00671). 🟢 VW, for P2414 and P2237 on the 2013-2014 Jetta and Beetle 2.0L: "O2 Sensor must be replaced after the ECM software has been updated." (2038575). 🟢 Land Rover, on a 2016 supplier batch of Brazil-made sensors: "If the code reads 554, 555, 556 or 557 the sensor must NOT be fitted to the vehicle." (SSM72545). 🟢 GM's Cruze diesel paper adds a fuel trim reset after the new part (PI1363).

What the owners report. 233 complaints (18%) end at a sensor named as the cause or replaced, 62 with a stall, 51 with a return. In 124 more, a sensor was replaced and the owner says it did not cure the problem and no other cause was named; the sorting rules file those under no diagnosis (see the method). A 2015 Passat owner wrote "THE ISSUE CAME OUT TO BE WITH THE FAILED BANK 1 OXYGEN SENSOR 1. IT'S PRETTY RARE FOR A CAR WITH LESS MILEAGE TO HAVE SUCH ISSUES. AS I'M OVER THE THREE YEAR MARK, THE FIX WAS NOT COVERED UNDER WARRANTY." (ODI 11229079).

The cheap cause that gets skipped. Which sensor. With the position unstated in about 92% of complaints, it is easy to buy the wrong one: the rear sensor mostly watches the converter, and the codes on this page belong to the front one. Also skipped: the order. Several papers reprogram first and replace second.

Fix it yourself. Only where honest: ⚪ our O2 sensor guide calls it one of the more do-it-yourself repairs when the sensor is not buried, a part of $30 to $80 against $50 to $175 of labor, and says to stop if it is seized, buried behind the engine or the mounting boss (the bung) rounds off. The papers print what a careful job looks like: Toyota, "DO NOT wipe off the gray anti-seizing compound applied on the NEW sensor threads." (SSC G0G); Ford lists penetrating lubricant and nickel anti-seize for its 14-0129 job.

At the shop — say this: "Which code, which bank, which sensor — and what did you measure that says it failed? Please replace only that one, tell me whether the computer needs software or a relearn first, and give me the old part."

Route 5 · The catalytic converter, and the cases where the sensor is only the messenger

What it is. A failing converter, an engine that burns oil, a misfire or another failure damages the sensors around it, and the sensor code is the first thing the car shows. A new sensor then fixes nothing. The converter codes are on P0420; converter prices are in our converter guide, sensor prices in our O2 sensor guide.

What the documents say. 🟢 Honda's 14-002 (P0420 and P0430), for the 2010 Accord, Crosstour, Odyssey and Ridgeline and the 2011 Pilot (by VIN): "One or both primary A/F Sensor (Air Fuel Ratio) caps … may have fallen off and bored a hole through the affected WU-TWC (Warm Up Three Way Catalyst)." (14-002). 🟢 GM's special coverage N192287100 replaces the front and rear oxygen sensors and both converters when oil consumption from piston ring wear damaged them (it has ended for nearly all cars; see the coverage file). 🟢 GM's 16-NA-111 (P0420 and P0430) says a blocked converter and a damaged sensor element may be caused by sand and debris past an unsealed air filter housing: "Do not replace any of the parts until the air filter housing has been validated to be completely sealed." (16-NA-111).

What the owners report. 78 complaints (6%) end at the catalytic converter, 20 with a stall and 44 with a return (56%); 16 of the 78 are Kia Souls and about a dozen mention oil consumption. 109 (9%) end at another cause (an engine, a transmission, a computer), 45 with a stall and 55 with a return (50%). 21 (2%) were checked and cleared, and 13 of them say the light came back (62%). A 2015 Soul owner wrote "The catalytic converter got pluged up from the oil consumption." (ODI 11576143); a 2016 Soul owner that "The oxygen sensor and catalytic convertor was replaced on three separate occasions however, the failure persisted." (ODI 11526736). A 2010 Town and Country owner wrote that a dealer replaced two sensors "AT A COST OF OVER $500, WHICH DID NOT FIX PROBLEM" before the dealer named a different part, the TIPM (ODI 10957900).

The cheap cause that gets skipped. Why the converter died. A converter replaced without asking why (oil, misfire, rich running) can be ruined by the same cause again.

At the shop — say this: "Please show me the live data from the sensors before and after the converter, and tell me why you think the converter failed — oil use, a misfire, rich running — before I authorize a $1,000 part."

The coverage file: which programs run in September 2026

Status "as of September 2026" is our computation from the printed terms, and "cannot be computed" means the paper prints a term but no start point, or no term at all. A program is not a repair of your car until a dealer has done it and written it down; ask by VIN.

What 1,273 complaints about oxygen-sensor faults show (from 1,355 found)

We searched NHTSA's complaint file for every narrative that names an oxygen-sensor code (P0130 to P0134, the bank 2 twins P0150 to P0154, others up to P0160, P2195 to P2198, P2A00 to P2A03) or uses oxygen-sensor wording in the spellings owners use. 1,277 complaints came from the first search; a second search for what it missed, in odd spellings such as "censor," "senor," "HEGO" and "H02S," added 78. Nothing was sampled. 1,273 describe an oxygen-sensor fault, warning or repair on the owner's car, and 82 do not (a false match, a part named only in a list, another vehicle, or only a converter code with no sensor fault). "Came back" below means the owner says the same light, code or symptom returned or the repair did not hold.

Three things stand out. First, the largest group is the one with no answer. "No diagnosis or repair stated" means the owner reports a light or a symptom and nothing was found or done yet, or does not say; it also holds 124 complaints in which a sensor was replaced, the owner says it did not cure the problem, and no other cause was named. Second, the groups that end at a plug or a leak come back least: 15% for wiring and 13% for exhaust leaks, against 56% for the converter, 50% for another cause and 62% for cleared-and-sent-home. The groups are small. Third, most complaints are not about the circuit code: only 96 of the 1,273 (8%) print an oxygen-sensor code from P0130 to P0160 (P0148, a fuel code, is left out), P2195 to P2198 or P2A00 to P2A03, and 13 print P0130 or P0131. Of the 1,273, 459 (36%) describe a stall or power loss, 57 (4%) a no-start, 276 (22%) mention a recall or campaign and 548 (43%) say the problem came back. NHTSA's form records a fire in 20, a crash in 17, an injury in 12 and a tow in 52; none records a death.

One rule needs explaining. In a final check we re-read the 189 complaints filed under "sensor replaced" that also say the problem came back. It moved 138 (124 to "no diagnosis," 7 to the converter, 6 to another cause, 1 to air or fuel) because the owner says the new sensor did not cure it; 51 stayed because the sensor itself kept failing or the shop named it again. So the sensor group shows few returns and the no-diagnosis group many.

Makes and models. Ford (208 complaints, 16%), Chevrolet (192, 15%) and Kia (119, 9%) lead, then Nissan (84), Jeep (81), Hyundai (76) and Toyota (66). 54% are 2011 to 2017 model years. These are complaints, not a ranking of cars.

The 13 complaints that print P0130 or P0131

Only 13 of the 1,273 print the codes this page is named for: one P0130 and twelve P0131 (one writes it without the P). Seven are "no diagnosis," three another cause, two air or engine condition and one checked and cleared; 8 describe a stall or power loss.

The P0130 is a 2017 Altima: after a car wash "the check engine warning light illuminated", a handheld scanner gave P0130, and the car went to an independent mechanic "but was not diagnosed or repaired." (ODI 11618642). Of the twelve P0131 complaints, a 2014 Malibu owner lost power on the highway with P0131, P2097 and P0171 and was told a month later that loose intake bolts were the cause (ODI 11581909), the cause GM's PIP5529B prints for P0131 and P0171 when the usual diagnosis finds nothing. A 2014 F-150 owner saw P0131 on a private reader after a recall reprogramming and was invoiced $1521.85 for another repair and the O2 sensor (ODI 11696972). None of the thirteen is a clean case of "the sensor was bad and a new one fixed it."

What owners say they paid

How much does it cost to fix P0130 or P0131? PulsCar's reading of the maker documents and the federal complaint file: nothing for a recall, campaign, extension or software update that the maker prints as free; about 12 to 30 minutes of dealer labor for a software update; $90 to $600 for a diagnosis (9 owner figures, median $125); $387 to $4,500 for connector or harness work (4 reports); $664 to $1,700 for exhaust repairs that included the sensor (5 reports); and for the sensor itself, $30 to $2,000 (41 figures, median $500). Our O2 sensor guide puts a sensor at $150 to $500 installed, and a code read is free at many parts stores or $20 to $40 with your own reader. The code does not say where in that range your car is, so ask for the VIN check and the plug inspection first, then for the measurement that says the sensor failed.

Owner-reported figures are what people told NHTSA about oxygen-sensor parts and labor: 81 figures from 70 complaints, after a mileage figure, a vehicle price, a settlement or a repair of another system was set aside by one written rule; each is in the published file, and each of the 353 excluded figures is in a second file. 24 say the owner paid, 27 that the owner was billed, 24 that the owner was quoted and 6 do not say.

• Sensor jobs (one or several sensors): 41 figures, $30 to $2,000, median $500; 12 are $300 or less, 6 are $1,000 or more.
• Sensor with other parts in one price: 18 figures, $450 to $4,000, median $1,378.
• Diagnosis: 9 figures, $90 to $600, median $125.
• Exhaust leak with the sensor: 5 figures, $664 to $1,700, median $800.
• Wiring, connector or harness: 4 figures: $387, $449, $1,100 and $4,500 (an engine harness quote for a 2003 4Runner).
• Catalytic converter tied to the sensor event: 3 figures: $1,000, $1,500 and $2,400.
• A repair quote for a monitor that would not set: 1 figure, $460 (a 2012 Kia Sorento complaint); it is not a diagnosis fee.

The figures are single reports, not a price list; the sensor group mixes one sensor with several and a dealer with a parts-store part.

Why P0130 and P0131 come back after a repair

548 of the 1,273 complaints (43%) say the problem came back or the repair did not hold: 296 in the no-diagnosis group, 68 in air and fuel, 55 in another cause, 51 in the sensor group and 44 in the converter group. The papers point to four reasons.

The cause was not the sensor. Jaguar Land Rover wrote that "23% were found to have no defects" (SSM72035), and Land Rover, in 2008, that over ninety percent of returned sensors had no trouble found (SSM37361). Chrysler, Mercedes and GM print connectors, terminals and hoses.

The cause is still there. A sensor fitted into a wet connector, a rubbing harness or an oily intake meets the same trouble; Mercedes replaces the female pins if the fault returns (Version 4).

The repair has a second step. Nissan's Altima paper and Infiniti's QX80 and JX35 papers reprogram first and relearn after; GM's Cruze diesel paper needs a fuel trim reset; VW updates software before the sensor. And the code was sometimes the messenger: a converter, a misfire or burning oil raises the sensor code first (Route 5).

Can you drive with P0130 or P0131?

Can you drive with P0130 or P0131, and for how long? PulsCar's advice, not a maker's rule: a steady light with a car that drives normally can wait a few days for a diagnosis, but not months, because a front sensor that cannot be trusted leaves the computer guessing at the mixture, and our O2 sensor guide describes the guess as usually rich, which is hard on the converter. If the car has stalled, lost power, shown reduced power or limp mode, will not start, or the light is flashing, pull over safely, switch the engine off and have it towed. The one exception, for a flashing light on a car that starts and runs normally, is a shop within 2 to 3 miles, reached gently, under 40 mph and on a light throttle. A burnt smell, smoke or exhaust fumes inside the car: pull over safely, switch the engine off, get out into fresh air and have it towed or inspected.

What the papers say. None of the maker papers we read for these codes tells the owner to stop driving, tow the car or park it. Several say the opposite for related codes and a car that drives normally. GM, for P0132 after a remote start: "This set code will not impact the vehicle performance." (16-NA-266). Infiniti's owner letter for a 2013 JX35 heater-circuit calibration campaign: "This has no effect on vehicle fuel consumption or safety.", though drivability may in rare cases be temporarily affected (PC185). Nissan's Sentra SULEV FAQ: "Is my vehicle safe to drive? A. Yes." (P1A25). None tells the owner what to do with a car that has stalled or lost power, although PIP5529B and 19-NA-196 describe stalling and the Mercedes papers list limp-home mode. The stop wording that does appear is a sales hold on new cars in dealer stock, not an instruction to owners.

Should you buy a used car with a P0130 or P0131 history?

Ask five things. Was the cause found, or only the code cleared? A receipt for a sensor is not proof the cause was fixed: 189 complaints describe a replaced sensor and say the problem came back. Which sensor was replaced, and with what? GM's 19-NA-196 says an aftermarket or wrong upstream sensor may cause a stall on 2010-2017 Equinox and Terrain 2.4L cars, typically with no related codes. Was a bulletin, campaign or extension done? A dealer's printout beats a seller's word. Does the plug look healthy? Rodent damage, oil on the harness and corrosion are cheap to see. Is there an exhaust leak? Listen at a cold start. A car with a P0131 history and an open oxygen-sensor campaign or extension on its VIN may be a free repair waiting if the program covers that fault (get the dealer's printout), not a reason to walk away. Walk away from a P0131 history with a stall and a seller who cannot say what was done.

Clearing P0130 or P0131 before an inspection

An emissions inspection generally checks that the check engine light is off and that the readiness monitors have completed; the exact rules differ by state, so ask your inspection station (our advice). Clearing the code resets the monitors, and the oxygen sensor monitors are among them: a car that was cleared yesterday will usually show "not ready." Toyota writes, for the 2007 Highlander Hybrid, that vehicles "may be unable to pass certain state emission testing requirements due to incomplete readiness of the required Air Fuel (A/F) sensor monitor." (F0P); BMW's 13E-A03 says a readiness bit is never set on certain N20 cars built 2011-2012 until the software is reprogrammed. About 30 of the 1,273 complaints say the car failed an emissions test or that monitors would not set. Do not clear and go: fix the cause, drive several normal trips and let the monitors finish first (our advice).

What the papers tell a shop to do with P0130 or P0131, checkpoint by checkpoint

1. Confirm the code, the sensor and the bank. Infiniti (QX80): "Replace only the A/F sensors related to the stored DTCs." Ford: the code decides the sensor.
2. Check the VIN for programs and the computer's part number (Nissan, Infiniti and Chrysler list computers or harness tags).
3. Read the other codes first. Land Rover: P0132 may be secondary. Chrysler: connector repair for any oxygen-sensor code before parts. GM: a software update does not correct P0132 or P0138.
4. Inspect the plug and the harness (GM's hose coupling, Ford's transmission harness, Mercedes' pins, Chrysler's terminals).
5. Test for intake and exhaust leaks.
6. Replace the sensor only on a code and a measurement, then do the software or relearn the paper prints, and clear.

Three P0130 and P0131 traps

Trap 1 · Searching for a recall and stopping when there is none. Most of these papers are bulletins, and a 2007 Accord owner, told to reprogram the computer, wrote "WHEN I PUT MY VIN NUMBER IN IT SAYS 0 RECALLS FOR MY CAR." (ODI 11340802). Ask for a bulletin, campaign and extension check by VIN.

Trap 2 · Replacing both sensors, or the wrong one. Infiniti's 2015 QX80 paper: "Do NOT replace both A/F sensors if the stored DTC(s) are for only one bank." Jaguar Land Rover found that 23% of 101 inspected sensor warranty claims had no defect, and Porsche's 89/18 shows the codes (P0133 and P0153 on the 911 GT3) can name the wrong bank (for those cars it tells the shop to replace both upstream sensors, so ask which paper applies). About 92% of owners do not say which sensor they mean.

Trap 3 · Treating the plug like a dirty contact. Mercedes: "Contact spray must never be used on contacts on the engine wiring harness." Ford: "Do not use dielectric grease in the sensor or harness connectors".

The P0130 and P0131 plan: 10 minutes, today, this week

Today (10 minutes). Write down the whole code list, which sensor and bank, and what the car did; look at the plug and the wires with the engine off and cool; do not clear the code. Today (VIN). Ask a dealer about recalls, campaigns, extensions, bulletins and software for the oxygen sensors, with the paper's number if your car is in the atlas. This week. Ask the dealer about programs and software; pay a dealer or independent shop for one diagnosis, with the measurement in writing, and try the cheapest route first. If the car has stalled or lost power, will not start, or the light is flashing, follow the triage box: tow it.

Three composite scenarios. These are composite scenarios, not individual customers.

• A Ram diesel. If you drive a 2010-2012 Ram 2500 or 3500 with the Cummins 6.7L diesel (built before October 4, 2012) and an oxygen-sensor code, ask for Chrysler's 25-004-12 by number, and for 25-003-13 and the harness tag suffix if it is a 2011 truck, before you accept a sensor quote.
• A Land Rover or Jaguar. If you drive a 2020-2022 Land Rover or Jaguar with the 2.0L, 3.0L supercharged or 5.0L gasoline engine and an oxygen-sensor fault, ask for the July 2026 extended warranty E002 by number (15 years or 150,000 miles on the exhaust oxygen sensors).
• A GM car. If you drive a 2013-2017 GM car with an LCV, LKW or LTG engine and P0131 with P0171 or P0106 on the reader, ask whether PIP5529B applies, and for the intake-bolt check, before parts.

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).

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 or symptom descriptions carried from PulsCar's repair guides — estimates, not measurements from a dataset we own.

1. Chrysler, Ram, Jeep: 25-004-12, 25-003-13, tech tip GPOP, STAR case S2308000118.
2. GM: 18-NA-009, Version 2, PIT5336, PIP5529B, 16-NA-266, 19-NA-062, 17-NA-155, PI1363, 19-NA-196, 20-NA-065, 16-NA-111, special coverage N192287100, recalls N182176760 and 13292.
3. Ford: 17-2124, 14-0129, 16-0163, 17-0014, 20-2380.
4. European makers: Mercedes LI54.18-P-057927, Version 1, Version 5, Version 6; Bentley 2075331/4; Audi 2014825/4, 23W1; VW 2038575, 24CV, notices VW, Audi; BMW SI B12 24 13, SIB 01 03 21; Porsche 89/18, 22/21; Lotus 2017/07.
5. Jaguar Land Rover: LTB00671, SSM72035, SSM37361, SSM72545, SSM72676, H231, K309, Q514, E002.
6. Nissan and Infiniti: ITB11-054a, NTB12-085b, ITB15-033, PC185, P1A25, EM09-016a.
7. Japanese and other makers: Toyota T-SB-0001-10, T-TT-0686-22, G0G, G0G letter, F0P; Lexus FLB, FLB instructions; Honda 14-002, 25-044; Acura 15-035, 15-007.
8. PulsCar analysis of NHTSA public data, October 2026: 1,355 complaints that name a code or use sensor wording, 1,273 about a fault on the owner's car, each sorted twice by the same written rules; owner-reported amounts; the document list. Complaints, amounts, excluded figures, documents, the sorting rules and how we did it (CC BY 4.0).

For the neighboring pages: P0133 for slow response, P0135, P0137 and P0138 for the heater and rear-sensor codes, P0171 and P0174 for the lean codes, P2096 for the post-catalyst trim code, P0420 for the converter, O2 sensor replacement cost, what a check engine light means, a car running rough and a car that stalls while driving.

Bring the code list, the VIN and the document numbers to the shop.

Prices verified July to October 2026 in the repair guides they are carried from and in the owner reports above, and reviewed quarterly. Technical documents verified October 2026: the 346 distinct documents in our published file, of which 227 were read in full.

Had P0130 or P0131 cleared by a plug, a leak, a software update or a new sensor? Email [email protected] with the vehicle, mileage and outcome.