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Diagnostic trouble code

P05CE

0 owner reports and 39 manufacturer filings across 10 model years from Buick, Cadillac, Chevrolet, GMC.

PowertrainGeneric OBD-II code39 manufacturer filings

Where P05CE shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2017 Buick EnclaveElectrical System6
2017 Chevrolet TraverseElectrical System6
2017 Chevrolet EquinoxElectrical System5
2017 GMC AcadiaElectrical System5
2017 GMC TerrainEquipment5
2017 Chevrolet ImpalaElectrical System4
2025 Cadillac CT4Engine2
2024 Cadillac CT4Engine2
2025 Cadillac CT5Engine2
2024 Cadillac CT5Engine2

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.

What it gets filed under

Electrical System 17Equipment 13Engine 4Unknown Or Other 4Equipment Adaptive/Mobility 1
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Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P05CE. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

What P05CE means

Source: SAE J2012 / OBD-II

P05CE 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 P05CE

Source: NHTSA files and the OBD-II standard

Can I keep driving with P05CE stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. 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.