P0403 A fault in the exhaust gas recirculation control circuit
5 owner reports and 41 manufacturer filings across 12 model years from Chevrolet, Ford, Jeep, Mitsubishi and others.
Where P0403 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2022 Jeep Gladiator | Exterior Lighting | 5 | — | Headlight assembly → |
| 2021 Jeep Gladiator | Exterior Lighting | 5 | — | Headlight assembly → |
| 2022 Jeep Wrangler | Exterior Lighting | 5 | — | Headlight assembly → |
| 2021 Jeep Wrangler | Exterior Lighting | 5 | — | Headlight assembly → |
| 2020 Jeep Wrangler | Exterior Lighting | 5 | — | Headlight assembly → |
| 2022 Ram 1500 | Exterior Lighting | 5 | — | Headlight assembly → |
| 2021 Ram 1500 | Exterior Lighting | 5 | — | Headlight assembly → |
| 2020 Ram 1500 | Exterior Lighting | 5 | — | Headlight assembly → |
| 2017 Chevrolet Volt | Fuel/Propulsion System | — | 3 | Fuel pump → |
| 2018 Chevrolet Cruze | Equipment | 1 | — | |
| 2019 Ford Escape | Engine | — | 1 | |
| 2022 Mitsubishi Outlander | Unspecified | — | 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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P0403 by make
The same record, one make at a time: the model years, bulletins and owner reports that name P0403 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.
Ford only showed one code P0403 tuneup with a written statement I asked for wanting 15k for a new engine and verbal;y stating I need a whole new engine
Below is a list of all the CEL codes that were pulled: P06DB P0030 P0031 P0403 P0405 P0443 P0458 P0489 P0597 P0598 P06DA P0AC4 P0135 P0AC4 P16E0 Looking into this issue I found that this is an one of the most common failures in the Chevy…
I took it to Auto Zone to have them plug the reader in and the error was “P0403” related to the EGR valve malfunction
41 manufacturer filings name P0403. 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 P0403.
- S2118000015 Service bulletin2022-03-25 · Exterior Lighting
- Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P0403 ? EGR Control Circuit Open, Set.
- S2118000015 RevB Service bulletin2022-03-25 · Electrical System
- Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P0403 ? EGR Control Circuit Open, Set.
- S2118000015 Service bulletin2022-01-01 · Exterior Lighting
- Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P0403 ? EGR Control Circuit Open, Set.
- PIE0489A Service bulletin2019-02-08 · Equipment
- This engineering information PI ends the need for information from the field for an MIL Lamp On, DTC P0403 Set.
What P0403 means
Source: SAE J2012 / OBD-IIA fault in the exhaust gas recirculation control circuit.
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 P0403
Source: NHTSA files and the OBD-II standardCan I keep driving with P0403 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.