HVAC DTC Troubleshooting: C0
DTC indicator C0: Climate Control Unit Internal Error
1.
Problem verification:

Problem verification
?1.
Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

?2.
Do the Self-Diagnostic Function with the climate control unit.

?3.
Check for DTCs.

Is DTC C0 indicated?

     
YES
     
     
     
     
NO
     
     
     
Intermittent failure, the climate control unit is OK at this time.?