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Home › Buick › 2004 › Century Base › Repair and Diagnosis › Engine Performance › System › Engine Controls (DTC P0140 To P0496) › Engine Controls Diagnosis › DTC P0403 › Conditions for Running the DTC

Conditions for Running the DTC

The engine is cranking or running.

The Ignition 1 Signal parameter is between 9-18 volts.

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