Clearing Diagnostic Trouble Codes

Use one of the two following methods in order to erase the DTCs.

Scan Tool Method:
1. Select DTCs for Diagnostic Trouble Codes.
2. View the DTCs.
3. After all of the DTCs have been displayed, the scan tool will display the following question: CLEAR DTCs? Answer YES.
4. The scan tool will display the following message: History data will be lost. CLEAR DTCs? Answer YES. This action will clear the DTCs.

Ignition Cycle Default
Existing DTCs automatically clear from memory if no diagnostic trouble codes occur for 100 drive cycles. A drive cycle occurs when the ignition is turned to RUN and the vehicle is driven faster than 16 km/h (10 mph).

A drive cycle also occurs if a DTC sets when the ignition key is turned to ON, regardless of vehicle speed.

Note: The following methods will NOT clear the DTCs:
^ Unplugging the ECM.
^ Disconnecting the Battery cables.
^ Turning of the ignition switch (except on an ignition cycle default).