P2E54Exhaust Pressure Sensor C Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2E54 is the general circuit fault of a third exhaust pressure sensor, C. Its position is set by the manufacturer; engines can carry several such sensors, as in a GE patent with one pressure sensor in each of two exhaust manifolds. No manufacturer publicly documents P2E54; Ford's 2023 diesels and its EcoBoost petrol engines use sensor A only. For that sensor Ford's diesel summary uses the general circuit code when the digital SENT sensor reports an error status or delivers raw data above a limit, while lost communication goes to U0691; for sensor C that is U069F. CARB's heavy-duty rule lists exhaust pressure sensors among monitored input components. Expect the MIL and, depending on use, limited boost or EGR. Low and High are P2E56 and P2E57.
- What you may notice
- MIL on
- Reduced power if boost or EGR control falls back to substitute values
- Other exhaust or EGR monitors may not run
- Likely causes
- LikelyExhaust pressure sensor C failed internally
- PossibleWiring near the exhaust damaged by heat or chafing
- PossibleCorroded or loose connector at sensor C
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.