O2 sensor Bank 1

Hello, Bank one will reference the side of the engine with the #1 cylinder on it. Removal is simple, just get the O2 sensor socket, or any pass-through type socket that fits, unplug the sensor, unscrew it, and revers to put it back on. Make sure you use anti-seize when you put it back on. If you cannot get the sensor out, you may have to use heat (torch) to break it loose. Not something recommended for the DIYer. Also, if it is sensor 1 bank one, it is close to the engine. If it is sensor 2 bank 2, it is close to the rear doors. After installation, the vehicle will self-test and shut off the check engine light once it has passed and reset the monitors. a few days, maybe a week.