Action Taken By PCM

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

PCM performs the following actions if DTC is set:

The PCM does not illuminate the MIL.
The PCM freezes shift adapts.
The PCM records the operating conditions when the "Conditions for Setting the DTC" are met. The PCM stores this information as freeze frame records.
The PCM stores DTC P0218 in PCM history.