DTCs that affect UTD operation can be stored in different systems. Refer to UTD DTC list for a list of UTD DTCs that can affect UTD operation. The DTCs that affect UTD system operation are read in only one of following two ways:

Most all information in diagnostic tables will refer to the scan tool for diagnostic support. For details on using the on-board diagnostic feature to access and/or clear DTCs Refer to On-Board Diagnostics in Instrument Panel, Gauges and Console.