DTC U0403: Invalid Data Received From Transfer Case Control Module: Description

The PSCM monitors the HS-CAN messages when the ignition has been on for more than 5 seconds, the voltage to the PSCM is greater than 6.5 volts and there are no DTCs present inhibiting PSCM operation.

• DTC U0403:00 (Invalid Data Received from Transfer Case Control Module: No Sub Type Information) - This DTC sets if the PSCM receives a value of "unknown" for the transfer case range from the TCCM.
• DTC U0403:29 (Invalid Data Received from Transfer Case Control Module: Signal Invalid) - This DTC sets if the PSCM receives a value of "faulty" or "not available" for the transfer case range from the TCCM.