Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Important: If the theft deterrent control module is unable to measure the ignition key transponder value for 30 consecutive seconds, after the vehicle has started, the module will enter a fail enable state. The vehicle will not stall or stop running. If the theft deterrent control module is in a fail enable state when the ignition is turned to OFF, it will remain fail enabled until the next time the vehicle is started. If the theft deterrent control module is fail enabled, the PASS-Key®III system is NOT active and the vehicle will start. The theft deterrent control module WILL send its enable signal even if a transponder value is not received. The theft deterrent control module will remain fail enabled until the module measures a valid key transponder value.

The theft deterrent control module sends the fuel disable signal to the PCM.
The vehicle will not start.
The theft deterrent control module flashes the SECURITY indicator.