Without Scan Tool
TO CLEAR FAULT CODES FROM THE ECU1. Turn the ignition off.
2. Remove the CLOCK fuse (10A) from the under-hood relay box.
3. Wait 10 seconds for the ECU to clear its memory, and reinstall the CLOCK fuse.
NOTE: Removing the CLOCK fuse also cancels the radio presets and the clock settings. Make a note of the radio presets before removing the fuse so you can reset them.