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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 438 (Engine Control System - Self-Diagnostics - 5.3L) >> Diagnostic Tests >> DTC P0140: Ho2S Circuit - Insufficient Activity - Bank 1, Sensor 2 & DTC P0160: Ho2S Circuit - Insufficient Activity - Bank 2, Sensor 2 >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 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 in the diagnostic procedure.

  1. 2

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

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