P1109

DTC PT109: BARO Sensor Circuit Out of Range High (2004-2005 models)

NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information.

1. Reset the ECM with a scan tool or the HDS.
2. Start the engine.
3. Check for Temporary DTCs or DTCs with a scan tool or the HDS.

Is DTC P1109 indicated?

YES - Substitute a known-good ECM and recheck. If the symptom/indication goes away, replace the original ECM.

NO - Intermittent failure, system is OK at this time.