Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

A current DTC will clear immediately when the condition for setting the fault is corrected with the key ON.
A history DTC will clear after 100 consecutive ignition cycles without a fault present.
Use a scan tool in order to clear the history and current DTCs.