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.

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

Fig 1: DTC P0608 Diagnostic Chart (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0608 Diagnostic Chart (2 Of 2)

Courtesy of GENERAL MOTORS CORP.