P24F2
EGR Temperature/Charge Air Cooler Temperature Correlation
What it means
After a long key-off soak both the EGR temperature sensor and the charge-air cooler outlet temperature sensor must read approximately the same ambient temperature. The ECM compares them and detects an implausible delta. One of the sensors drifts, is wired wrong, or is exposed to a heat source the model does not know about.
Is it safe to drive?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
One sensor drifting outside tolerance
highOne of the most commonly reported causes for this code — check this first.
Residual heat in the charge-air cooler after a hot soak
mediumA plausible cause — test and verify before replacing parts.
Related help
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