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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 410 (Engine Controls - Self Diagnostics - 4.3L) >> Diagnostic Tests >> DTC P1133: Ho2S Circuit - Insufficient Switching - Bank 1, Sensor 1 & DTC P1153: Ho2S Circuit - Insufficient Switching - Bank 2, Sensor 1 >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 2

    If the voltage is varying above and below the specified value, the condition is not preset.

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