DTC U0423: Invalid Data Received from Instrument Panel Cluster Control Module: Description

The PSCM monitors the HS-CAN bus when the ignition has been on for more than 5 seconds, when the voltage to the PSCM is greater than 10 volts and when there are no DTCs present that are inhibiting PSCM operation.

DTC U0423 (Invalid Data Received from Instrument Panel Cluster Control Module: No Sub Type Information) - This DTC sets if the PSCM receives invalid or unknown data from the IPC. This DTC indicates a missing or invalid power mode message from the IPC.