Conditions for Running the DTC
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
P0685, P0686, P0687
- Ignition Voltage = Greater than 11 V
Frequency the DTC runs = Continuously - After the running conditions are met
P0689
- Ignition Voltage = Greater than 9 V
- Engine Controls Ignition Relay Command = On
Frequency the DTC runs = Continuously - After the running conditions are met
P0690
- DTC P0685 = Not set
- Engine Controls Ignition Relay Command = Off - For greater than 2 s
Frequency the DTC runs = Continuously - After the running conditions are met
P1682
- Engine Controls Ignition Relay Command = On
- Ignition Voltage = Greater than 5. 5 V
Frequency the DTC runs = Continuously - After the running conditions are met