P144C – Evaporative Emission System Purge Check Valve Performance

P144C Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P144C Possible Causes

Stuck open Evaporative Emission (EVAP) canister purge check valve (part of EVAP canister purge valve),Damaged EVAP canister purge check valve

P144C Description

The Powertrain Control Module (PCM) tests the Evaporative Emission (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. The DTC is set if the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test.