Conditions for Setting the DTC
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
P0685
- The commanded state of the ODM and the actual state of the control circuit do not match.
- The condition is present for more than 5 s.
P0689
- The ECM detects less than 5 V on the ignition 1 voltage circuit to the ECM.
- The condition is present for more than 5 s.
P0690
- The ECM detects more than 16 V on the ignition 1 voltage circuit to the ECM when the relay is commanded ON.
- The ECM detects more than 2 V on the ignition 1 voltage circuit to the ECM when the relay is commanded OFF.
- The condition is present for more than 2 s.