Conditions for Running the DTC

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

P0685

The ignition is ON.
The battery voltage is between 9-16 volts.

P0690

This DTC will run with the ignition ON or OFF.
This DTC will run when the powertrain relay is commanded ON or OFF.
DTC P0685 is not set.