Pinpoint Test N : U0155, U0423: Notes
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Normal Operation and Fault Conditions
With the ignition ON, the IPC sends messages to the ABS module over the HS-CAN. If the ABS module does not receive these messages within the specified time frame, the ABS module sets DTCs. This can be due to a IPC failure, a circuit failure on the HS-CAN or an excessive load on the network. For information on the messages sent to the ABS module by the IPC, Anti-Lock Control .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| U0155 | Lost Communication With Instrument Panel Cluster (IC) Control Module | This DTC sets in continuous memory if the ABS module does not receive any messages from the IPC. |
| U0423 | Invalid Data Received From Instrument Panel Control Module | This DTC sets in continuous memory if any one of the following messages is "invalid" instead of the actual information; hill descent switch status, traction control on-off and trailer sway configuration command. |
Possible Causes
- Network communication concern
- IPC
- ABS module