Pinpoint Test C : U0140:00: Notes
WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
Control system logic, REFER to: Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0140:00 | Lost Communication With Body Control Module: No Sub-Type Information | This Continuous Memory Diagnostic Trouble Code (CMDTC) sets in the HVAC control module if data messages received from the BCM over the CAN are missing for 5 seconds or more. |
Possible Sources
- Fuse(s)
- Wiring, terminals or connectors
- 12V battery voltage
- BCM
- HVAC control module