What does code P23C7 mean?

Q: What does code P23C7 mean?

Fuel Heater Control Module Power Control Circuit Open. P23C7 indicates that the fuel heater control module has detected an open circuit in its power control circuit, meaning the module is not receiving the voltage it needs to operate the fuel heater. The control module monitors the power supply line and sets this code when the circuit remains open, preventing the heater from functioning.

DTC codes / P23xx · Ignition system and misfire / P23C7

P23C7Fuel Heater Control Module Power Control Circuit Open

P23C7 indicates that the fuel heater control module has detected an open circuit in its power control circuit, meaning the module is not receiving the voltage it needs to operate the fuel heater. The control module monitors the power supply line and sets this code when the circuit remains open, preventing the heater from functioning.

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.