I am getting codes P0141, P0161 and P0036 on my 03 cadillac cts. I replaced the B2S2 oxygen sensor and still have the same problem. I am also getting a high (about 1500-1700mV) reading on bank 2 sensor 2. Bank 1 Sensor 2 is staying at 471mV and the front sensors are fluctuation between 850mV and approximately 80 mV. Can someone help me?
SOURCE: codes for 2001 cadillac seville
oxygen sensors are fine you have a air leak check intake for leaks start with checking all inlet pipes rubber hoses if ok check fuel press if ok most likely mass air flow sensor i am leaning toward air leak.
SOURCE: where is bank 2 sensor one on a Cadillac CTS?
Bank 2 Sensor 1 is on the driver side - follow the right side of the engine down the headers which attaches to the catalytic converter. The o2 Sensor you're asking about (Bank 2 Sensor 1) is before the Catalytic. The o2 Sensor after the Catalytic is Bank 2 Sensor 2. Bank 1 Sensor 1 is on the passenger side as well as Bank 1 Sensor 2.
SOURCE: 2003 cadillac cts 3.2 liter..rough idle, scan tool
Did you ever find a solution to this? I am having the same issue on 2,4,6. I have replaced the coils. checked the intake for vacuum leaks. I am lost here let me know if you find anything and I will do the same.
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