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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 450 (Mirror System) >> Diagnostic Information and Procedures >> DTC B1640 >> Conditions for Setting the DTC

Conditions for Setting the DTC

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B1640 01 

A short to voltage is detected on the mirror heating element control circuit while the heated mirrors are inactive.

B1640 02 

A short to ground is detected on the mirror heating element control circuit while the heated mirrors are active.

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