The Ultimate Guide to Bank 1 Sensor 2 Maintenance and Troubleshooting

Yes. Bank 1 is the left side, bank 2 the right side. Sensor 1 is in front of cat, sensor 2 is behind the cat. A new tuner is looking over my logs and pointed out that my bank 1 02 is 10-12% higher (adding more fuel) then my bank 2 (1-3%). I'm convinced bank 1 sensor 2 is 226A0-4LA0A. I already ordered an Oxygen Sensor tool as its impossible to remove it with a regular wrench. DTC P0141 stands for “Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2), and this indicates that there's something wrong with the ... Bosch 15895 Premium OE Fitment Oxygen Sensor - Compatible With Select 2000-07 Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, and Saturn Vehicles. It's the oxygen sensor that is on the driver side below the muffler right after the big round Cat. You may be able to see it from the top. Passenger side is #1,2,3,4 from front of car to rear. Driver side is #5,6,7,8. Bank one sensor two would be passenger side, rear sensor. So, it's the downstream sensor on the rear. You'll have to access it from underneath the vehicle. Sensor 1 is up on top. That said, the code you ... Bank 1 sensor 2 is after the catalytic converter. on any vehicle, bank is the side of the engine, bank 1 is the side of the engine with cyl 1. It has four sensors, Bank 1 is in the exhaust manifold before the turbo inlet and is buried, sensor 2 (on cars which have one, the CUWA does) is ...