Information Bus

Communications Network

DTC Charts

NOTE: Network DTCs (U-codes) are often a result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, repair procedures such as module reprogramming often set network DTCs. Replacing a module to resolve a network DTC is unlikely to correct the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery, refer to Battery.

Communication Network DTC Chart