Pinpoint Test A : DTC (Diagnostic Trouble Code) U0100:00 Or U0101:00: Notes
WARNING: This page is about a different car, the 2016 Ford Transit Connect. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
The BCM communicates with the PCM over the HS-CAN. The TCM is contained inside the PCM and cannot be serviced separately. Refer to: Communications Network - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0100:00 | Lost Communication With ECM/PCM "A": No Sub Type Information | A continuous memory DTC that sets in the BCM if powertrain data messages received from the PCM over the HS-CAN are missing. |
| U0101:00 | Lost Communication with TCM: No Sub Type Information | A continuous memory DTC that sets in the BCM if powertrain data messages received from the PCM over the HS-CAN are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- TCM (part of the PCM)
- BCM