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Home >> Buick >> 2002 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.1L Engine >> Diagnostic Tests >> DTC P0403: EGR Solenoid Control Circuit >> Test Description

Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 5

    This step tests for an open in the ground circuit to the solenoid.

  2. 6

    This step tests if voltage is constantly being applied to the solenoid.
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