Pinpoint Test I : U0164:00: Notes
DTC Fault Trigger Condition-PCM
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0164:00 | Lost Communication With HVAC Control Module | The FCIM controls the HVAC control module functions. The PCM sets this DTC if data messages from the HVAC control module through the GWM are missing. |
Normal Operation and Fault Conditions
The HVAC control module functions are performed by the FCIM. REFER to: Communications Network .
Possible Sources
- Communications network concern
- FCIM
- GWM
- PCM