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P0151 Diagnostic Trouble Code Discussion for September 2011

Air Fuel Sensor (Bank 2 Sensor 1) Circuit Low Input (Lean Shift)

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Trouble Ticket Help Requests for DTC P0151
Help Request Posted
2001 GMC Yukon XL 1500 SLE 5.3L Surge, MIL Lamp on, Low power VIN: 3GKFK16T61
P0151: Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage. ... here so some advice would be appreciated. The customer originally brought it to a local exhaust shop and they replaced all the O2 sensors and both cats. Lots of shiny parts under this vehicle. (see code list) The customer complaint is low power under har...
September 19, 2011