Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The PCM/ECM detects a short to voltage on the brake pedal position sensor signal circuit when the voltage should be 0 volts.