Clearing Trouble Codes

Data Link Connector (DLC):

When a diagnostic trouble code or information flag is set the PCM stores it in two tables: General Information and Malfunction History.
- When clearing diagnostic trouble codes from General Information without a Scan tool you will need to have the ignition On and ground Data Link Connector (DLC) connector terminals A to B three times within five seconds.
- General Information can also be cleared with 50 ignition On cycles.
- Malfunction (Malf) history can be cleared only with a Scan tool.

NOTE: Disconnecting power to the PCM has no effect on stored diagnostic trouble codes or information flags in Malfunction history, but will clear diagnostic trouble codes and information flags in General Information.