Pinpoint Test B : U0121:00, P1934:87: Notes
WARNING: This page is about a different car, the 2015 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0121:00 | Lost Communication With Anti-Lock Brake System (ABS) Control Module: No Sub Type Information | A continuous memory DTC that sets in the BCM if ABS messages received from the ABS module over the HS-CAN are missing for 5 seconds or more. |
| P1934:87 | Vehicle Speed Signal: Missing Message | A continuous memory DTC that sets in the BCM if ABS vehicle speed messages received from the ABS module over the HS-CAN are missing. |
Possible Sources
- Communication network concern
- Battery voltage concern
- ABS module
- BCM