P24F2EGR Temperature/Charge Air Cooler Temperature Correlation
- 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
- P24F2 compares two readings in the intake path of a diesel with cooled exhaust gas recirculation: the gas temperature after the EGR cooler and the air temperature behind the charge air cooler. When conditions say both should be close, for instance after the engine has cooled down, a wide gap shows that one of the two sensors cannot be trusted. Chrysler lists the code for the 3.0 L EcoDiesel (sales code EXF) in the 2014 Ram 1500 and Jeep Grand Cherokee; bulletins 18-028-14 and 18-018-14 cure false settings with new PCM software rather than parts. Chrysler publishes no thresholds. Circuit faults of the single sensors have their own codes such as P040C or P0097. The driver usually sees only the warning lamp; EGR use may be limited.
- What you may notice
- Check engine light, often without any noticeable driving fault
- EGR operation reduced as a precaution on some calibrations
- Implausible EGR or charge air temperatures in live data after a cold soak
- Likely causes
- LikelyOutdated PCM calibration flagging the correlation without a real fault (Chrysler 3.0 L diesel)
- PossibleEGR temperature sensor drifting or sooted up
- PossibleCharge air cooler outlet temperature sensor reading wrong
- RareCorroded connector adding resistance to one sensor signal
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.