P2EC2Turbocharger Compressor Outlet Temperature Sensor Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2EC2 flags a compressor outlet temperature that is electrically valid but does not fit the operating point. A reference is easy to build: Cummins (US6401457) derives the outlet temperature from inlet temperature and pressure, turbo speed, air mass and pressure ratio, and after a long soak the sensor should also agree with intake and ambient readings. Under 13 CCR 1968.2 CARB wants such two-sided checks (section (e)(15.2.1)) and, in (f)(7), a watch on charge air cooler performance, which relies on the temperature entering the cooler; Ford's diesel test P026A scales its limits with compressor outlet temperature. No manufacturer documents P2EC2. Typical causes are a slow, drifted or oil-coated sensor, or one that has worked loose in its port.
- What you may notice
- Check engine lamp after the fault is confirmed
- Reading disagrees with intake and ambient temperature after a cold soak
- Charge air cooler diagnosis may be suspended
- Likely causes
- LikelySensor drifted or reacting too slowly
- PossibleTip coated with oil from crankcase or turbo seals
- PossibleSensor loose or not reaching into the air stream
- RareContact resistance at the connector
- 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 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.