Conditions for Setting the DTC

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

P0685

The commanded state of the ODM does not match and the actual state of the control circuit.
The condition is present for more than 5 seconds.

P0690

The ECM detects more than 2 volts on the ignition 1 voltage circuit to the ECM.
The condition is present for more than 2 seconds.