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Home >> Buick >> 2003 >> Century Custom >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 3.1L Engine >> Diagnostic Tests >> DTC P0327: Knock Sensor Circuit >> Test Description
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Test Description

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

  1. 3  - A fault in the 24X CKP sensor 12 volt reference circuit or the CMP sensor can cause this DTC to set.
  2. 6  - Tapping on the engine block will simulate an engine knock.

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