P1109

DTC P1109: BARO Sensor Out of Range High

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

Is DTC P1109 indicated ?

YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.

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