Pinpoint Test C : U0164: Notes
DTC Fault Trigger Condition-PCM
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0164 | Lost Communication With HVAC Control Module | The PCM sets this DTC if data messages received from the FCIM through the GWM are missing. |
Normal Operation and Fault Conditions
The HVAC control module is housed in the FCIM. REFER to: Communications Network - System Operation and Component Description .
Possible Sources
- Communications network concern
- FCIM
- BCM
- GWM
- PCM