Conditions for Running the DTC: P0602
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The following conditions must be met:
- The ignition switch is in Run or Crank.
- The controller is identified as a service replacement PCM.