Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0685, P0689, or P0690
| Circuit |
Short to Ground |
Open/High Resistance |
Short to Voltage |
Signal Performance |
| Relay Coil B+ |
P0685 |
P0685 |
- |
- |
| Relay Switch B+ |
P0689 |
P0689 |
- |
- |
| Relay Coil Control |
P0685 |
P0685 |
P0685 |
- |
| Relay Ignition Output Ignition 1 Voltage |
P0689 |
P0689 |
P0690 |
- |