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P0154 Diagnostic Trouble Code Discussion for August 2007

Heated Oxygen Sensor (Bank 2 Sensor 1) Signal Remains At Center

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Trouble Ticket Help Requests for DTC P0154
Help Request Posted
1999 GMC K1500 Sierra SLE 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GTEK19R1X
P0154: Heated Oxygen Sensor (Bank 2 Sensor 1) Insufficient Activity. Please Help!!! I have worked on this vehicle 3 times now for the same complaint. When the vehicle first came in it had been at three other shops.The customer told me that the vehicle had been tuned up, had the intake gasket replaced, a new fuel filter, an inje...
August 01, 2007