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