Possible causes For Models 2005 and up:– Faulty Air Fuel Ratio Sensor 1 Bank 2 – Air Fuel Ratio Sensor 1 Bank 2 circuit is open or shorted– Air Fuel Ratio Sensor 1 Bank 2 circuit electrical connection For Models before 2005:– Faulty Heated Oxygen Sensor 1 Bank 2– Heated Oxygen Sensor 1 Bank 2…