Conditions For Clearing DTC
WARNING: This page is about a different car, the 1998 Pontiac Grand Am, 1998 Oldsmobile Achieva, and 1998 Buick Skylark. However, it is still accessible from the selected car via links, so may be relevant.
Current DTC clears when voltage difference between DRIVER HIGH terminal No. 2 and DRIVER LOW terminal No. 3 is less than 400 millivolts for 500 milliseconds. History DTC clears when scan tool CLEAR CODES is received or 250 malfunction-free ignition cycles have occurred.