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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls And Fuel - 6.2L - DTC P0300 To DTC P1175 >> DTC P0685, P0689, or P0690 >> DTC Descriptors

DTC Descriptors

DTC P0685

Engine Controls Ignition Relay Control Circuit

DTC P0689

Engine Controls Relay Feedback Circuit Low Voltage

DTC P0690

Engine Controls Relay Feedback Circuit High Voltage

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