What does code P23CE mean?

Q: What does code P23CE mean?

Fuel Heater Control Module Feedback Signal Performance. P23CE indicates that the fuel heater control module has reported a feedback signal that is outside the expected range or inconsistent with the commanded state, meaning the engine control module (ECM) cannot verify that the fuel heater is operating correctly. The ECM monitors the feedback circuit to ensure the heater turns on and off as commanded, and this code sets when the signal voltage or current does not match the expected value for the given conditions.

DTC codes / P23xx · Ignition system and misfire / P23CE

P23CEFuel Heater Control Module Feedback Signal Performance

P23CE indicates that the fuel heater control module has reported a feedback signal that is outside the expected range or inconsistent with the commanded state, meaning the engine control module (ECM) cannot verify that the fuel heater is operating correctly. The ECM monitors the feedback circuit to ensure the heater turns on and off as commanded, and this code sets when the signal voltage or current does not match the expected value for the given conditions.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

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