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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 P0116: ECT Sensor Circuit Performance >> Test Description
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Test Description

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

  1. 7  - An IAT sensor that is skewed low can cause this DTC to set.
  2. 8  - A snapshot is the quickest method to capture the data before it changes.
  3. 10  - This step will determine if high resistance has caused this DTC to set.
  4. 12  - A high resistance short from the signal circuit to the low reference circuit can cause this DTC to set.
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