Pinpoint Test I : U0166:87: Notes
WARNING: This page is about a different car, the 2020 Ford Transit Connect. However, it is still accessible from the selected car via links, so may be relevant.
U0166:87
Refer to Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Communications Network - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0166:87 | Lost Communication With Auxiliary Heater Control Module: Missing Message | A continuous memory DTC that sets in the BCM if messages received from the HVAC module are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- GWM concern
- HVAC module
- BCM