i cant resolve the problem because the mechanics cannot find out which 1 it is it keeps saying 1 and 2 bank

imran, March 2014

Ask your mechanic to look at the fuel trim on live date to see if the 02 sensor is switching between + and - About 9 % either way. The 02 sensor only measures oxygen in the exhaust you may have an air leak somewhere on the intake. Too much oxygen 02 sensor cannot correct it so it flags a fault code.

Raz, March 2014

If it says bank 1 and bank 2 sensors at fault then my guess it is both sensors required.

cdc, March 2014