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Home >> Chevrolet >> 1997 >> Venture Base, Van Passenger Extended >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P0140 - Ho2S Circuit Insufficient Activity - Sensor 2 >> Diagnostic Aids
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Diagnostic Aids

Check for faulty connections or damaged harness. If connections and harness appear okay, observe HO2S display on scan tool while moving all related harness and connectors. A change in scan tool display indicates fault location. Check HO2S 2 heater operation.

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