Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The DTC becomes history when the conditions for setting the DTC are no longer present.
A history DTC is cleared after 40 consecutive malfunction free warm-up cycles.
The PCM receives the clear code command from the scan tool.

Fig 1: Diagnostic Check - DTC P0654 (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnostic Check - DTC P0654 (2 Of 2)

Courtesy of GENERAL MOTORS CORP.