Chevrolet - OBD Code Lookup

P0688 Chevrolet

Electronic Control Module Power Relay Sense Circuit/Open

Intake Manifold Tuning Valve Solenoid Control Circuit

Glow Plug Module Control Circuit

Engine Control Module Power Relay Control Circuit Open

5V Reference 2 Circuit Low Voltage

Engine Speed Output Circuit

Fuel Level Output Circuit Malfunction

5 Volt Sensor Reference 2 Circuit

5V Reference 2 Circuit Low Voltage

Malfunction Indicator Lamp Control Circuit Malfunction