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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Engine Control System - Self-Diagnostics - 4.2L) >> Diagnostic Tests >> DTC P0133: Ho2S Circuit - Slow Response - Sensor 1 >> Test Description

Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2

    When the system is operating correctly, the HO2S voltage should toggle above and below the specified values.

  2. 5

    The specified value is what is measured on a correctly operating system.

  3. 6

    The specified value is what is measured on a correctly operating system.

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