P24F2 code meaning
EGR Temperature/Charge Air Cooler Temperature Correlation
Powertrain system Generic code P24xx codes Check engine light
What P24F2 means
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.
P24F2 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of P24F2
- 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
Common causes of P24F2
- Most 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
- Less likelyCorroded connector adding resistance to one sensor signal
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
EGR temperature sensorCac outlet temperature sensor
What each part of P24F2 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| F2 | The exact fault in that area. |
What to do next
- Note P24F2 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P24F2
What does P24F2 mean?
P24F2 means "EGR Temperature/Charge Air Cooler Temperature Correlation". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P24F2?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P24F2 fail an emissions test?
Yes, it can. P24F2 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P24F2 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P24F2 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.