P0443 A fault in the evaporative purge valve circuit
2 owner reports and 13 manufacturer filings across 9 model years from Acura, Buick, Cadillac, Ford and others.
Where P0443 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2020 Jeep Gladiator Pickup | Electrical System | 3 | — | EVAP purge valve → |
| 2020 Jeep Wrangler | Electrical System | 3 | — | EVAP purge valve → |
| 2019 Jeep Wrangler | Electrical System | 3 | — | EVAP purge valve → |
| 2016 Acura RDX | Forward Collision Avoidance | — | 1 | EVAP purge valve → |
| 2018 Buick Regal | Equipment | 1 | — | EVAP purge valve → |
| 2018 Cadillac ATS | Equipment | 1 | — | EVAP purge valve → |
| 2020 Ford Fusion | Fuel/Propulsion System | — | 1 | EVAP purge valve → |
| 2018 GMC Acadia | Equipment | 1 | — | EVAP purge valve → |
| 2018 GMC Canyon | Equipment | 1 | — | EVAP purge valve → |
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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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.
3 weeks ago everything locked up and I had to take to a dealer, they replaced the alternator but the system still malfuctioning and now the emissions control lights stay on with a P0443 code, replaced the evap control valve and the light…
13 manufacturer filings name P0443. 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 P0443.
- S2025000002 Service bulletin2020-03-10 · Electrical System
- Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
- S2025000002 Service bulletin2020-03-10 · Electrical System
- Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
- S2025000002 Service bulletin2020-03-10 · Electrical System
- Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
- PIP5552 Service bulletin2018-02-01 · Equipment — Other — Owners/Service/Other Manual
- This Preliminary information communicates a concern of a MIL on with P0459 or P0443 setting and engineering investigating this condition.
What P0443 means
Source: SAE J2012 / OBD-IIA fault in the evaporative purge valve 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 P0443
Source: NHTSA files and the OBD-II standardCan I keep driving with P0443 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.