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P2099 Diagnostic Trouble Code Discussion for December 2013

Downstream Fuel System Rich - HO2S-22 (Bank 2 Sensor 2)


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Trouble Ticket Help Requests for DTC P2099
Help Request Posted
2009 Chevrolet Traverse LTZ 3.6L Poor Fuel Economy, MIL Lamp on VIN: 1GNER33D89
P2099: lean. This is our shop vehicle,originally set this DTC and found one of the post cat o2 sensor's heater shorted.I chose to replace all four of them as the vehicle has been trouble free and they are all the same age.The mil stayed off for several weeks ,then intermit...
December 31, 2013
2009 Chevrolet Traverse LTZ 3.6L Poor Fuel Economy, MIL Lamp on VIN: 1GNER33D89
P2099: lean. This is our shop vehicle,originally set this DTC and found one of the post cat o2 sensor's heater shorted.I chose to replace all four of them as the vehicle has been trouble free and they are all the same age.The mil stayed off for several weeks ,then intermit...
December 31, 2013
2009 Chevrolet Traverse LTZ 3.6L Poor Fuel Economy, MIL Lamp on VIN: 1GNER33D89
P2099: lean. This is our shop vehicle,originally set this DTC and found one of the post cat o2 sensor's heater shorted.I chose to replace all four of them as the vehicle has been trouble free and they are all the same age.The mil stayed off for several weeks ,then intermit...
December 31, 2013