Possible causes – Faulty Air Fuel Ratio Sensor 1 Bank 1– Air Fuel Ratio Sensor 1 harness is open or shorted– Air Fuel Ratio Sensor 1 circuit poor electrical connection Tech description There is a factory service bulletin for the following Infiniti models: 2004-2005 Infiniti FX352004-2005 Infiniti FX452004-2005 Infiniti G35 Sedan2004-2005 Infiniti G35 SedanInfiniti Factory…