hi
i’ve a 07 2.0 put my scanner on it and have a 2c9d code 02 sensor before cat bank 2
the question i have is do i have 2 sensors before the cat and if i do which one is the sensor for bank 2
thanks for any advice
Oem parts diagram here https://www.realoem.com/bmw/enUS/showparts?id=BZ12-EUR-05-2007-E85-BMW-Z4_20i&diagId=18_0603
Bank 2 will be served by cylinders 2 and 3.
