P04FB on Chevrolet vehicles
P04FB is named on 8 Chevrolet model years (2020–2026): 59 manufacturer filings and 3 owner reports in NHTSA’s files, across Blazer, Equinox.
Which Chevrolet model years name P04FB
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2023 Chevrolet Blazer | Not specified | 10 | — |
| 2022 Chevrolet Blazer | Not specified | 10 | — |
| 2021 Chevrolet Blazer | Not specified | 10 | — |
| 2020 Chevrolet Blazer | Not specified | 10 | — |
| 2024 Chevrolet Blazer | Not specified | 8 | — |
| 2025 Chevrolet Blazer | Not specified | 7 | — |
| 2025 Chevrolet Equinox | Not specified | 3 | 3 |
| 2026 Chevrolet Equinox | Not specified | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
What Chevrolet owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
The engine code is P04FB and is commonly found as an issue when you do a search
Chevrolet filings that name P04FB
Source: NHTSA manufacturer communicationsBulletins and campaigns Chevrolet filed with NHTSA whose summary names P04FB. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5841B Service bulletin2023-01-27 · Engine And Engine Cooling — Exhaust System — Emission Control — Crankcase (Pcv)
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP5841C Service bulletin2023-03-15 · Engine And Engine Cooling — Exhaust System — Emission Control — Crankcase (Pcv)
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP5841D Service bulletin2024-01-05 · Power Train
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP5841A Service bulletin2022-05-11 · Back Over Prevention
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP5841E Service bulletin2025-03-27 · Engine
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP5841E Service bulletin2025-04-10 · Unknown Or Other
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP5841F Service bulletin2025-04-16 · Unknown Or Other
- This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.
- PIP6059 Service bulletin2025-04-18 · Unknown Or Other
- This Preliminary Information communicates a potential MIL / SES due to P04FB that Engineering is currently working on a design improvement.
- PIP6059A Service bulletin2025-05-12 · Unknown Or Other
- This Preliminary Information communicates a potential MIL / SES due to P04FB that Engineering is currently working on a design improvement.
- PIP6059B Service bulletin2025-10-17 · Unknown Or Other
- This Preliminary Information communicates a potential MIL / SES due to P04FB that Engineering is currently working on a design improvement.
What P04FB means
Source: SAE J2012 / OBD-IIP04FB 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. The record above is what Chevrolet and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P04FB a known problem on Chevrolet vehicles?
It is a documented one: NHTSA's files hold 59 manufacturer filings and 3 owner reports naming P04FB on 8 Chevrolet model years (2020–2026). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Chevrolet models does P04FB appear on most?
2023 Blazer (10 documents), 2022 Blazer (10 documents), 2021 Blazer (10 documents).
Does P04FB on a Chevrolet mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.