Pinpoint Test E : DTC (Diagnostic Trouble Code) U0100:87: 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 Module Communications Network for schematic and connector information.
Normal Operation and Fault Conditions
The IPMA communicates with the PCM through the GWM.
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0100:87 | Lost Communication With ECM/PCM "A": Missing Message | A continuous memory DTC that sets in the IPMA if network messages received from the PCM over the HS-CAN1 through the GWM are missing for 0.5 second or more. |
Possible Causes
- Communication network concern
- PCM
- GWM concern
- IPMA (integral to the interior rear view mirror)