What does code P24F3 mean?

Q: What does code P24F3 mean?

Reductant Tank Temperature/Fuel Temperature Correlation. P24F3 indicates that the engine control module has detected a mismatch between the reductant tank temperature sensor and the fuel temperature sensor that exceeds the calibrated correlation limit. The computer compares these two readings because both fluids are exposed to similar ambient conditions, and a persistent spread suggests a sensor fault, wiring issue, or a genuine temperature problem in one of the systems.

DTC codes / P24xx · Auxiliary emission controls / P24F3

P24F3Reductant Tank Temperature/Fuel Temperature Correlation

P24F3 indicates that the engine control module has detected a mismatch between the reductant tank temperature sensor and the fuel temperature sensor that exceeds the calibrated correlation limit. The computer compares these two readings because both fluids are exposed to similar ambient conditions, and a persistent spread suggests a sensor fault, wiring issue, or a genuine temperature problem in one of the systems.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.