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Home >> Oldsmobile >> 2002 >> Bravada AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 4.2L >> Diagnostic Tests >> DTC P0140: Ho2S Circuit - Insufficient Activity - Sensor 2 >> Test Description

Test Description

The number below refers to the step number in the diagnostic procedures.

  1. 6

    Disconnecting the HO2S 2 and connecting a jumper wire between the HO2S 2 high signal circuit and the HO2S 2 low signal circuit will determine if the PCM or wiring or HO2S 2 is malfunctioning.

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