What does code P240B mean?

Q: What does code P240B mean?

EVAP System Leak Detection Pump Heater Control Circuit Low. P240B indicates that the engine control module has detected a low-voltage condition on the control circuit for the evaporative emission system's leak detection pump heater. The heater is used to warm the pump during certain tests, and a low circuit means the control wire is shorted to ground or the heater element has failed.

DTC codes / P24xx · Auxiliary emission controls / P240B

P240BEVAP System Leak Detection Pump Heater Control Circuit Low

P240B indicates that the engine control module has detected a low-voltage condition on the control circuit for the evaporative emission system's leak detection pump heater. The heater is used to warm the pump during certain tests, and a low circuit means the control wire is shorted to ground or the heater element has failed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

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.