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Federal filingsHome›Trouble codes› P003A
Diagnostic trouble code

P003A

1 owner report and 27 manufacturer filings across 12 model years from Chevrolet, Ford, GMC, Ram.

Powertrain Generic OBD-II code 27 manufacturer filings 1 owner report

Where P003A shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2022 Ford F-250 Super DutyEngine3—
2021 Ford F-250 Super DutyEquipment3—
2020 Ford F-250 Super DutyEquipment3—
2022 Ford F-350 Super DutyPower Train3—
2021 Ford F-350 Super DutyPower Train3—
2022 Ford F-450 Super DutyPower Train3—
2021 Ford F-450 Super DutyEquipment3—
2020 Ford F-450 Super DutyPower Train3—
2016 Chevrolet ExpressEngine1—
2016 Chevrolet Silverado 3500HDFuel/Propulsion System1—Fuel pump →
2016 GMC Sierra 3500HDEngine1—
2019 Ram 2500Engine—1

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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P003A by make

The same record, one make at a time: the model years, bulletins and owner reports that name P003A on that maker’s vehicles.

Ford 8

What it gets filed under

Engine 12 Not specified 8 Power Train 4 Equipment 3 Fuel/Propulsion System 1

What owners said

Source: NHTSA complaint database

Owners’ 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.

I have experienced unexpected loss of power during acceleration, lack of exhaust breaking and engine codes p003a and p006f which I believe are associated with the turbo actuator
2019 Ram 2500 Nov 11, 2025 NHTSA owner report

27 manufacturer filings name P003A. 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.

Photo: Compagnons / Unsplash

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names P003A.

What P003A means

Source: SAE J2012 / OBD-II

P003A 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.

From here

Common questions about P003A

Source: NHTSA files and the OBD-II standard

Can I keep driving with P003A 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.