P04DB
6 owner reports and 52 manufacturer filings across 25 model years from Chevrolet, Ford, GMC, Jeep and others.
Where P04DB shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2017 Ford Escape | Electrical System | 6 | — | Battery → |
| 2020 Ford Escape | Engine | 4 | — | |
| 2018 Ford Escape | Engine | 2 | 2 | |
| 2025 Ford Bronco | Power Train | 3 | — | |
| 2020 Ford EcoSport | Engine | 1 | 2 | |
| 2017 Ford Edge | Electrical System | 2 | 1 | Battery → |
| 2025 Ford Ranger | Power Train | 3 | — | |
| 2021 Jeep Wrangler | Electrical System | 3 | — | Battery → |
| 2017 Lincoln MKC | Electrical System | 3 | — | Battery → |
| 2025 Chevrolet Silverado 2500HD | Engine | 2 | — | |
| 2025 Chevrolet Silverado 3500HD | Engine | 2 | — | |
| 2023 Ford Bronco | Power Train | 2 | — | |
| 2018 Ford Explorer | Power Train | 2 | — | |
| 2017 Ford Explorer | Power Train | 2 | — | |
| 2017 Ford Focus | Engine | 2 | — | |
| 2025 GMC Sierra 2500HD | Electrical System | 2 | — | Battery → |
| 2025 GMC Sierra 3500HD | Electrical System | 2 | — | Battery → |
| 2021 Jeep Gladiator | Back Over Prevention | 2 | — | |
| 2020 Ram 1500 | Service Brakes | 2 | — | Brake pads → |
| 2019 Ford EcoSport | Power Train | 1 | — | |
| 2018 Ford EcoSport | Power Train | 1 | — | |
| 2019 Ford Escape | Engine | — | 1 | |
| 2017 Ford Fiesta | Engine | 1 | — | |
| 2016 Ford Fiesta | Power Train | 1 | — | |
| 2019 Lincoln Continental | Engine | 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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
P04DB by make
The same record, one make at a time: the model years, bulletins and owner reports that name P04DB 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.
after my oil pump recall was done, the check engine light came on and is reading code P04DB
A check engine light with code P04DB (Crankcase Ventilation System Disconnected) is also present
It started with the check engine light came on notifying the third spark plug was damaged and showed the codes P0303, P04DB, P0316, P0339
52 manufacturer filings name P04DB. 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 P04DB.
- 26P04 Other2026-04-22 · Power Train
- Recommended Repair Prior to Sale Customer Satisfaction Program 26P04 Certain 2025 Model Year Bronco and Ranger Vehicles with 2.7L Engine Setting Diagnostic Trouble Code (DTC) P04DB Powertrain Control Module Software Update
- TSB 26-2054 Service bulletin2026-02-16 · Power Train
- Some 2025 Bronco/Ranger vehicles equipped with a 2.7L EcoBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P04DB stored in the powertrain control module (PCM) with no other relevant DTCs present. This may be due to the software in the PCM.
- SSM 54544 Service bulletin2026-02-02 · Engine
- Some 2025 Bronco/Ranger vehicles equipped with a 2.7L EcoBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P04DB stored in the powertrain control module (PCM) with no other relevant DTCs present. Refer to Workshop Manual (WSM), Section 303-08B Engine Emission Control > Diagnosis and Testing > Crankcase Ventilation > Pinpoint Test > steps HG
- 24-NA-215 Service bulletin2024-12-18 · Electrical System
- This technical bulletin provides repair information to correct a customer concern of an MIL Illuminated in DIC (with DTCs P2463 and P04DB set).
- 24-NA-215 Service bulletin2024-10-04 · Engine
- This technical bulletin provides repair information to correct a customer concern of an MIL Illuminated in DIC (with DTCs P2463 and P04DB set).
- SSM 51592 Service bulletin2023-05-02 · Engine And Engine Cooling
- Some 2023 Bronco vehicles equipped with 2.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P04DB stored in the powertrain control module. This may be due to a fault detected while in transport mode or a leak in the positive crankcase ventilation system. To correct the condition, deactivate transport mode, refer to WSM, Section 419-10. Perform
What P04DB means
Source: SAE J2012 / OBD-IIP04DB 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 P04DB
Source: NHTSA files and the OBD-II standardCan I keep driving with P04DB 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.