Conditions for Setting the DTC
If, during the engine-off natural vacuum small leak test, P0442, the engine control module (ECM) detects an abrupt FTP signal change other than a refueling event, this DTC will set.
If, during the engine-off natural vacuum small leak test, P0442, the engine control module (ECM) detects an abrupt FTP signal change other than a refueling event, this DTC will set.