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P0140 Diagnostic Trouble Code Discussion for February 2013

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
2005 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GCDM19XX5
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. Cant figure this one out. Have .45 with minimal movement. Pinned the ECM at the Purple/white and had .64, so I decided to cut the purple/white out at ECM and at sensor harness and run a jumper wire and the voltage moved around but was low in the .1-.3V but whe...
February 22, 2013