Communications Network

Communications Network

DTC Charts

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

U0001-U0121:

U0121-U0155:

U0155-U0184:

U0184:00-U0238:

U0238:00-U2011:

U2013-U3000:88: