DTC Types

Diagnostic Chart:

Description

DTCs are categorized by type. The type will indicate the action the DTC will take in storing a failure and illuminating the MIL. The 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 List table in Testing and Inspection / Procedures / Vehicle on-Board Diagnosis / Diagnostic Trouble Code Description for the type of each PCM DTC.

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.