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Diagnostic trouble code

P02EF

0 owner reports and 15 manufacturer filings across 8 model years from Jeep, Lincoln.

PowertrainGeneric OBD-II code15 manufacturer filings

Where P02EF shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2021 Jeep CherokeeFuel System, Gasoline3—
2021 Jeep WranglerExterior Lighting3—
2022 Jeep WranglerPower Train2—
2019 Jeep WranglerBack Over Prevention2—
2019 Lincoln NautilusPower Train2—
2019 Jeep CherokeeFuel System, Gasoline1—
2023 Jeep WranglerPower Train1—
2018 Jeep WranglerBack Over Prevention1—

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

Power Train 7Electrical System 3Fuel System, Gasoline 2Back Over Prevention 2Exterior Lighting 1
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Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P02EF. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

What P02EF means

Source: SAE J2012 / OBD-II

P02EF 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 P02EF

Source: NHTSA files and the OBD-II standard

Can I keep driving with P02EF 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.