Conditions for Setting the DTC
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
- The PCM/ECM detects that the A/C pressure is less than 0 psi (0.01 volts).
- The PCM/ECM detects that the A/C pressure is more than 309 psi (4.94 volts).