Conditions for Running the DTC
WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- The ignition 1 voltage is between 10-18 volts.
- The engine speed is more than 80 RPM.
- DTC P0031 and P0037 run continuously once the above conditions are met for more than 1 second.