What does code P23E0 mean?

Q: What does code P23E0 mean?

Cylinder 4 Fuel Heater Performance. P23E0 indicates that the powertrain control module has detected a performance fault in the fuel heater circuit for cylinder 4, typically used in diesel engines to warm the fuel for better cold-weather combustion. The computer monitors the heater's electrical current or temperature response and sets this code when the circuit does not behave as expected during the commanded test.

DTC codes / P23xx · Ignition system and misfire / P23E0

P23E0Cylinder 4 Fuel Heater Performance

P23E0 indicates that the powertrain control module has detected a performance fault in the fuel heater circuit for cylinder 4, typically used in diesel engines to warm the fuel for better cold-weather combustion. The computer monitors the heater's electrical current or temperature response and sets this code when the circuit does not behave as expected during the commanded test.

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.