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P0140 Diagnostic Trouble Code Discussion for November 2004

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity

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Trouble Ticket Help Requests for DTC P0140
Help Request Posted
1997 Chevrolet Cavalier 2.2L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 3G1JF5245Y
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. This came in with compaint of Had Coolant Flush done NOW it runs poorly.. scan & found two codes.4 gas readings real high - repaired rear o2 connection , repaired pcv leak.. Then I was at the ecm (in rf facia under rf fender well)to start checking ecm grou...
November 09, 2004
2002 GMC Sierra 2500 SL 6.0L Long crank time VIN: 1GTGK29U32
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. Hi Group, Sorry in advance for the long post. This GMC truck has presented a real chalenge. I starts fine cold, and will start fine hot immediatly after it is shut off, but if left to sit for 10 min or longer it will crank for at least 5-10 seconds before sta...
November 30, 2004