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P0154 Diagnostic Trouble Code Discussion for March 2009

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
2003 Chevrolet Tahoe LT 5.3L Cuts out, Misfire, MIL Lamp on VIN: 1GNEK13Z43
P0154: Heated Oxygen Sensor (Bank 2 Sensor 1) Insufficient Activity. This Tahoe came in and the customer ststed that the check engine light comes on while driving, engine misfires and check engine light flashes. No big deal, should be an easy misfire correction. I took the vehicle out and sure enough it happened. What I noticed...
March 11, 2009