Conditions For Running DTC

WARNING: This page is about a different car, the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1626 is not active.
PCM is not in password learn mode.
Passlock(tm) system is enabled.
Fuel enable decision point has been reached, or engine is cranking.