P0202
2 owner reports and 201 manufacturer filings across 36 model years from Cadillac, Chevrolet, GMC, Mazda and others.
Where P0202 shows up
Source: NHTSA manufacturer communications and complaintsShowing the 25 model years where P0202 appears most; it is on file for 36 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P0202 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P0202 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Got vehicle to dealer and they confirmed the error code (P0202 - covered under powertrain warranty), but then also noted an error code for P129F where the truck would not start up
After their analysis here is their statement on the service invoice: "Client state check engine light comes on and vehicle will run rough - Client scan for codes and had codes P0202 & P0204
201 manufacturer filings name P0202. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P0202.
- PIE0802A Service bulletin2024-11-18 · Electrical System
- This engineering information (EI) closure ends the need for gathering further information from technicians in regard to having the Check Engine Lamp illuminated on the Driver Information Center (DIC) and DTC P0202 set. The technician will need to replace the wire harness and affected fuel injector.
- PIE0802 Service bulletin2024-09-25 · Engine
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to having the Check Engine Lamp illuminated on the Driver Information Center (DIC) and DTC P0202 set.
- PIE0791B Service bulletin2024-06-19 · Electrical System
- This engineering information (EI) closure ends the need for gathering further information from technicians in regard to the Check Engine Lamp illuminated on DIC, and having DTCs P0202, P0203 Set.
- PIE0791A Service bulletin2024-06-05 · Electrical System
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Check Engine Lamp illuminated on Driver Information Center (DIC), and having DTCs P0202, P0203 Set.
- PIE0791 Service bulletin2024-05-30 · Engine
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the Check Engine Lamp illuminated on Driver Information Center (DIC), and having DTC’s P0202, P0203 Set.
- TT 01-20-02_3 Service bulletin2023-10-19 · Fuel System, Other
- T8 fuel injector harness inspection for stored DTCs P0201, P0202, P0203, P0204.
What P0202 means
Source: SAE J2012 / OBD-IIP0202 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P0202
Source: NHTSA files and the OBD-II standardCan I keep driving with P0202 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.