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Home >> Pontiac >> 2003 >> Sunfire Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 2.2L >> Diagnostic Tests >> DTC P1171: Fuel System Lean During Acceleration >> Test Description
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Test Description

The number below refer to the step number on the diagnostic procedure.

  1. 2  - When the system is operating correctly, the HO2S 1 voltage should toggle above and below the bias voltage. You may need to operate the vehicle within the Freeze Frame conditions and Conditions for Setting the DTC to duplicate the malfunction that was detected by the PCM.
  2. 4  - The specified value is what is measured on a correctly operating system.

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