DTC P144C: Evaporative Emission System Purge Check Valve Performance

P144C - EVAPORATIVE EMISSION SYSTEM PURGE CHECK VALVE PERFORMANCE

Description:	The powertrain control module (PCM) tests the EVAP canister purge check valve for a stuck open condition. The EVAP canister purge check valve test is performed during minimal boost conditions, once per drive cycle, when entry conditions are met. This DTC sets if the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test.
Possible Causes:	Stuck open EVAP canister purge check valve Stuck closed EVAP canister purge check valve Damaged EVAP ejector venturi Damaged EVAP canister purge check valve
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST HX .