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P0140 Diagnostic Trouble Code Discussion for June 2012

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
1996 Volvo 850 GLT 2.4L Hesitation, MIL Lamp on VIN: YV1LS5549T
P0140: B1s2. Hello, I have this Volvo that has come in with an extremely intermittent hesitation/stumble and MIL is on, has O2 codes as listed. At this time I cannot duplicate any driveability concern. Upstream O2 seems to be switching. Adaptives are around zero, even on f...
June 13, 2012