DTC U0422: Invalid Data Received from Body 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 9 volts and when there are no DTCs present that are inhibiting PSCM operation.

DTC U0422 (Invalid Data Received from Body Control Module: No Sub Type Information) - This DTC sets if the PSCM receives invalid or unknown data from the BCM. This DTC indicates a missing or invalid power mode message from the BCM.