Pinpoint Test N : U0140:00: Notes
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Four Wheel Drive Systems for schematic and connector information.
Normal Operation
The BCM sets the DTC U0140 when key messages are not received for longer than 5 seconds. This loss of key messages degrades the transmission functionality. Other modules that require data from the BCM module all set communication DTCs and may also exhibit system function concerns.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0140:00 | Lost Communication With Body Control Module (BCM): No Sub Type Information | Sets in continuous memory in the TCCM if BCM data messages received from the BCM over the HS-CAN are missing for longer than 5 seconds. |
Possible Sources
- Communication concern
- Battery voltage concern
- BCM module
- TCCM