SORTING RULES - MAP (MANIFOLD ABSOLUTE PRESSURE) / BAROMETRIC PRESSURE SENSOR COMPLAINTS (P0106 AND SISTER CODES)
PulsCar analysis of NHTSA public data, October 2026. License: CC BY 4.0

Fingerprint of the rules text below, taken when it was written and before any complaint was sorted: 724891193e166577778c2cd218453f6c6462d1ef1da08fcbe5b5f975b969ba5c (2026-10-14T08:27:57Z)
Fingerprint of the addendum for the second batch, taken before that batch was sorted: 69d4eef93278d015c50f2315b5df923226ea457e4502bbae6bbccc802eb00a62 (2026-10-14T08:40:39Z)


Written before any complaint in the set was sorted.

## Pool (how the complaints were found)
NHTSA complaints received 2015-01-01 to 2026-10-04 (782,908 narratives; 2026-10-04 is the latest received date in the
flat files). A complaint is in the pool if its narrative matches any of the following case-insensitive text searches
(the third also needs one of its context words somewhere in the same narrative):

1. R1 - the code P0106 by any spelling (letter O for zero, a space, hyphen or period after the P, suffix 00), or a bare number after a code word:
   `(?<![A-Z0-9])P\s?[-.]?\s?[0O]\s?1\s?0\s?6(?:\s?[-:]?\s?[0O]{2})?(?![0-9])`
   `\b(?:code|codes|dtc|dtcs|error|cel|coded|fault)\W{0,6}#?\s?[0O]?106\b`
2. R1s - a sister code of the same circuit (P0105, P0107, P0108, P0109), same spellings:
   `(?<![A-Z0-9])P\s?[-.]?\s?[0O]\s?1\s?0\s?[5789](?:\s?[-:]?\s?[0O]{2})?(?![0-9])`
   `\b(?:code|codes|dtc|dtcs|error|cel|coded|fault)\W{0,6}#?\s?[0O]?10[5789]\b`
3. R2 - the manifold absolute pressure (MAP), barometric or boost-pressure sensor in owners' words:
   `manifold\s*(?:absolute\s*)?pressure|\bmap\s*(?:sensor|sensors|circuit|signal|reading|code)|\bt-?map\s*(?:sensor|code)|\bm\.a\.p\b|\bmap\b[^.]{0,25}\b(?:sensor|vacuum|manifold)|\bmap/baro|\bbaro(?:metric)?\s*(?:pressure|sensor)|barometric\s*(?:pressure|sensor)|boost\s*pressure\s*sensor|intake\s*(?:manifold\s*)?pressure\s*sensor|\bmap\s*&\s*iat|vacuum\s*sensor`
   together with: `check\s+engine|engine\s+light|\bcel\b|\bmil\b|\bcode|\bdtc|stall|stalled|hesitat|surg|rough|limp|reduced\s+power|jerk|misfire|lean|clean|replac|dirty|failed|bad|faulty|defect|malfunction|diagnos|sensor\s+(?:was|is)|service\s+engine`

Background for the reader (not a sorting rule): the manifold absolute pressure (MAP) sensor reports the pressure in the
intake manifold to the engine computer; many engines use it, together with a barometric reading, to work out how much
air the engine is taking in and how much fuel to add. P0106 is "range/performance" (the MAP reading is plausible but
disagrees with what the throttle position, engine speed or barometric pressure say it should be); P0107 is "circuit low
input" (signal below the expected range); P0108 is "circuit high input" (signal above the expected range); P0109 is an
intermittent circuit; P0105 is a general circuit fault. Owners say "MAP sensor", "manifold pressure sensor", "baro
sensor", "boost sensor", "T-MAP".

For each complaint record exactly one CATEGORY and four yes/no FLAGS. You see an excerpt around the matching words
(and the whole narrative when nothing matched). Record what the excerpt supports; if it is cut off at a point that
matters, code what is stated.

## RELEVANCE
N - Not a MAP / barometric-pressure-sensor event on THIS vehicle. Use N when:
    - the match is false (the words appear in a list of unrelated parts or a different system; "map" means a road map, a
      fuel map or a software map; "MAP" means something else);
    - the narrative only lists the words among many other complaints, with no statement that this vehicle had a
      MAP-sensor fault, warning, code, symptom or repair;
    - the words come from another vehicle, a news story or advice, not this vehicle;
    - the MAP sensor is mentioned only as a part that was checked or replaced during a repair for something clearly
      unrelated (a transmission, brakes, a recall for another system) with no link to the MAP fault.
    NOT N (relevant) when, on this vehicle: P0106 or a sister code (P0105 P0107 P0108 P0109) is named; OR the
    MAP/barometric sensor is described as failed, dirty, replaced, blamed, diagnosed or suspected by a shop/dealer/mechanic
    as the cause of a symptom or warning; OR a MAP-sensor code or symptom is described even if the cause is unknown.

## CATEGORY (one letter) - what was found or done, on this vehicle

S - Sensor replaced. The MAP / barometric / T-MAP sensor (or the sensor with its housing or with the manifold part it is
    built into) was named by a shop, dealer or mechanic as the cause, or was replaced.
D - Clogged or contaminated sensor or port. Ice, water, oil, carbon, debris or a plugged PCV orifice at the sensor or its
    port was named as the cause, or the sensor/port was cleaned and that is the repair stated.
W - Wiring or connector. The MAP connector, pigtail, wiring harness, a ground, a fuse/relay, the 5-volt reference or the
    power feed to the sensor was named as the cause or was repaired/replaced.
A - Vacuum or air path. A vacuum hose or line to the sensor, an intake-manifold gasket or leak, a boost/charge-air leak
    (turbo hose, intercooler, clamp), an intake duct or air filter problem, or another air leak was named as the cause or
    was repaired/replaced.
F - Software or campaign only. A reflash/recalibration, relearn procedure, recall, TSB, special-coverage or
    warranty-extension procedure was the only repair stated (no part named as cause).
O - Another cause. A repair outside the MAP sensor, its connector and the air/vacuum path was named as the cause
    (throttle body, MAF/IAT sensor, EGR, fuel system, ECM, turbo or wastegate, engine or transmission failure, a
    different system), or the code or symptom was traced to something else.
K - Checked and cleared. The shop or dealer inspected or tested and found no fault, or only cleared the code, with
    no repair; or the light went out by itself and nothing was done.
U - No diagnosis or repair stated. The event is reported but nothing was found or done yet, or the complaint does
    not say; also an owner's own guess, a forum, a code reader or scan with no shop/dealer/mechanic mentioned.

Precedence when more than one fits: use the FINAL repair the complaint reports as having fixed it (or, if it never
got fixed, the cause the shop named last). A part replaced that the owner says did not help does not count. If
several parts were replaced together and no single one is named, use the most specific named part in the order
W, A, D, S. Among F, O, K, U: F before O before K before U. A cause the owner merely guesses at does not count (an
owner's "probably the MAP sensor" is U unless a shop or the dealer said it, or the part was replaced by someone).

## FLAGS (yes/no)

stall - the complaint states that while driving or at a stop the engine stalled, shut off, lost power, went into
    limp/reduced power, or hesitated/surged badly because of this fault.
nostart - the complaint states the engine would not start, started hard or died soon after starting because of this fault.
recall - the complaint states that a recall, special coverage, service campaign, extension, TSB or "known issue"
    notice for this vehicle was performed, offered, missing, refused, asked about, or is blamed or credited for this event.
returned - the complaint states that after a repair or a reset the same light, code or symptom came back, or the
    repair did not fix it.

## OUTPUT

One CSV line per complaint, in the order given, no header line:
`odino,category,stall,nostart,recall,returned,note`
category is one letter (N S D W A F O K U); flags are yes or no (for N, all four flags are no);
note is at most 15 words, no commas, saying what decided the category.


==============================================================================
ADDENDUM (second batch)
==============================================================================

A second check searched the whole complaint file again for what the first text searches missed. It added complaints that name the same sensor in other words
(manifold air pressure sensor, absolute pressure sensor, mass air pressure sensor, turbo boost sensor, charge air pressure sensor, baro sensor, "MAP harness/codes")
and a few that name a related pressure-sensor code (P0068, P2226-P2229, P0235-P0239, P012x). They are sorted with exactly the rules above.
Relevance reminder: the sensor must be the manifold / barometric / boost-pressure sensor of THIS car (not a brake-booster vacuum sensor, tire, fuel-rail, oil or exhaust pressure sensor).
Sorting rules for motorcycles, powersports and motorhome/heavy-truck chassis: these are outside this car study and are sorted N.


==============================================================================
WRITTEN RULES USED TO SETTLE DISAGREEMENTS AND IN THE FINAL CONSISTENCY CHECK
==============================================================================
R1 a MAP/barometric sensor stated as REPLACED (by a shop, dealer, mechanic or the owner) is S even if the fix did not hold (returned=yes). "Told it is the MAP" counts as S only when a shop/dealer/mechanic said it; a code reader, an app, a forum or an unnamed "I was told" with nothing replaced is U.
R2 the MAP only in a list of parts changed or checked among several unrelated ones, or ruled out as fine while the real symptom is elsewhere -> N (no MAP fault is described on this vehicle).
R2b a bare inventory: the MAP is one item in a single clause listing three or more OTHER repairs or checks with nothing singling it out (no code, no diagnosis naming it) -> N. A fix attempt that names the MAP with at most two other parts, or ties it to a code or symptom, is relevant. A dated sequence of separate repair visits is not an inventory: the visit that replaced the MAP counts (S).
R3 when the narrative says the final repair that fixed it (or the cause the shop named last) was outside the MAP sensor and its connector/air path, the category is O even if the MAP was replaced first.
R4 several parts changed together: most specific in the order W, A, D, S.
R5 a reflash/ECU update with no part named -> F.
R6 flags: stall = stalled, shut off, lost power, limp/reduced power stated as happening because of the fault (plain hesitation, a slow response or sluggishness is not a stall; a stall blamed on another part is not this fault); returned = the same light, code or symptom came back or the repair did not fix it.
R7 an air filter or intake part replaced with the sensor: the order of R4 applies.
R8 an owner's inference about the cause (a suspected failed tube, condensation, a rumour that an update fixes it) with nothing replaced or named by a shop -> U.
R9 motorcycles, powersports and motorhome/heavy-truck chassis are outside this car study -> N.
R10 an owner who cleaned the sensor (or port) and nothing else is named -> D even if it did not help; recall flag = a recall/TSB/special coverage/settlement/known-issue notice for this vehicle is mentioned as performed, offered, refused or asked about (a statement that there are no recalls is no).
R11 a related pressure-sensor code (P0068, P2226-P2229, P0235-P0239, P012x, brand codes) counts only when the owner's words or the code's own printed wording name the MAP / barometric / boost-pressure sensor or its pressure reading; a bare code number in a list of codes with no such sensor named -> N.
R12 an ambiguous "manifold sensor" with no pressure/MAP wording -> N.

Pool history: first batch 253 complaints (R1 P0106 33, R1s sister code 12, R2 MAP words 224, some matching more than one); second batch 73 complaints added by an independent search of the whole file (owners' words such as "turbo boost sensor", "charge air pressure sensor", "absolute pressure sensor", and the related boost and barometric codes). Total 326.