Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

A current DTC clears when the diagnostic runs and does not fail.
A history DTC clears after 40 consecutive malfunction free warm-up cycles.
The PCM receives the clear code command from the scan tool.

Fig 1: DTC P0654 (1 Of 2)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0654 (2 Of 2)
Courtesy of GENERAL MOTORS CORP.