DTC Types

DTCs are categorized by type. The type will indicate the action the DTC will take in storing a failure and illuminating the MIL. The following table indicates what action each DTC type will take when a failure is recorded. Type C DTCs that DO NOT display a message were formerly referred to as Type D.




In order for a type B DTC to request MIL illumination the DTC must fail in two consecutive drive trips in which the DTC tests.

Refer to the DTC Description for the type of each PCM DTC. Refer to Vehicle On-Board Diagnostics. Testing and Inspection

Always refer to the diagnostic support information within each DTC to obtain the Action Taken when the DTC sets and the Conditions for Clearing the DTC. These will indicate any variations from the general type A, B and C actions.