DTC P1109: BARO Sensor Circuit Out of Range High
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION
.
- Reset the ECM/PCM with the HDS.
- Start the engine.
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P1109 indicated?
YES: Go to step 4.
NO: Intermittent failure, the system is OK at this time.
- Update the ECM/PCM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P1109 indicated?
YES: If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then recheck. If the ECM/PCM was substituted, go to step 1.
NO: If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.