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Good morning,

Can anyone give a little advise to point me in the right direction. I have a 2014 cooper and I have an engine management light that has come on. I plugged my ODB reader in and it gave me an error code of P2270 which I understand is the 02 sensor, bank 1 sensor 2. I think I am correct in saying this is the downstream sensor after the CAT. However I have had a little nosey around the engine bay and I have found 2 x sensors in the exhaust around 5 inches from each other at the back of the engine by the bulk head. Is one of these the offending sensor or will it be further down the exhaust system as with previous cars I have had its normaly on the down pipe or even slightly further back. Id like to replace it myself so any advise as to where it is would be great.

Thank you.
Rich.
 
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