What does code P2405 mean?

DTC codes / P24xx · Auxiliary emission controls / P2405

P2405Evaporative Emission System Leak Detection Pump Sense Circuit Low

P2405 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the sense circuit of the evaporative emission (EVAP) leak detection pump. The PCM expects a certain voltage range from the pump's sensor, but the signal is below the acceptable threshold, which can prevent the EVAP system from properly testing for leaks.

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.