The EVAP purge valve serves to deliver fuel vapor from the canister to the intake manifold. The purge solenoid is pulse width modulated when the ECM commands it to empty the canister. The voltage on the solenoid control circuit is monitored continuously. If the voltage should remain above an upper threshold, this DTC will set.

DTC P0445 will set when:

P0445 is a (type B) DTC.

To locate an intermittent problem, use the scan tool to monitor the actual EVAP purge solenoid with engine running.

Wiggling wires while monitoring the EVAP purge solenoid may locate the area where a short to ground exists.