DTC Troubleshooting: P1109
DTC P1109: BARO Sensor Circuit Out of Range High
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1109 BARO Sensor Circuit Out Of Range High
      

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1109 BARO Sensor Circuit Out of Range High
      

Is DTC P1109 indicated?

     
YES
     
     
     
The failure is duplicated. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P1109 goes away and the PCM was updated, troubleshooting is complete. If DTC P1109 goes away and the PCM was substituted, replace the original PCM.?
     
NO
     
     
     
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?