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Home >> Chevrolet >> 2001 >> Cavalier LS, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Engine Controls Self-Diagnostics - 2.4L) >> Diagnostic Tests >> DTC P0134: Ho2S Circuit Insufficient Activity >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

The normal scan tool voltage varies between 150-850 millivolts while in a Closed Loop operation.

An intermittent could be the result of poor electrical connection, rubbed-through wire insulation, or broken wire inside insulation.

Inspect for a poor electrical connection or for a damaged harness. Inspect harness electrical connectors for improper mating, broken locks, improperly formed electrical connectors, damaged terminals, poor terminal-to-wire connection or damaged harness.

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