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Home › Buick › 2004 › Century Base › Repair and Diagnosis › Engine Performance › System › Engine Controls (DTC P0506 To P1640) › Engine Controls Diagnosis › DTC P1640 › Conditions for Setting the DTC

Conditions for Setting the DTC

The ODM has detected a voltage greater than 33 volts.
Or
Excessive current is detected on any circuit to the ODM.
The conditions are present for 30 seconds.