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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 935 (Engine Controls And Fuel - 4.8L, 5.3L, 6.0L And 6.2L - DTC P0231 To DTC P1255) >> DTC P0685, P0689, or P0690 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis 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 -
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