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P0140 Diagnostic Trouble Code Discussion for February 2005

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
1996 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1WL52M3T
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. costumer does not notice any drivablity issues,only check engine lamp comes on driving intermittently
February 09, 2005
1999 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSA29M6X
P0140: O2 sensor no activity detected. Daughters car, I am able to scan for these codes but dont have any diagnostic manuals for VW. I do remember from past repairs that replacing the O2 to correct these codes is not always the answer. Any and all help will be greatly appreciated!
February 15, 2005