Diagnostic Trouble Code Descriptions
Diagnostic Trouble Code (DTC) Type DefinitionsEmissions Related DTCs
Action Taken When the DTC Sets - Type A
- The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
- The control module stores a failure record at the time the DTC set.
Action Taken When the DTC Sets - Type B
- The control module illuminates the MIL on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module stores a failure record at the time the DTC set.
Conditions for Clearing the MIL/DTC - Type A or Type B
- The control module turns OFF the MIL after the diagnostic runs and does not fail.
- A current DTC Last Test Failed clears when the diagnostic runs and passes.
- Use a scan tool in order to clear the MIL and the DTC.
Non-Emissions Related DTCs
Action Taken When the DTC Sets - Type C
- The control module stores the DTC information into memory when the diagnostic runs and fails.
- The MIL will not illuminate.
- The control module stores a failure record at the time the DTC set.
Conditions for Clearing the DTC - Type C
- A last test passed, or current DTC clears when the diagnostic runs and passes.
- Use a scan tool in order to clear the DTC.
