Bank 1 bank 2 which is which? - Alfa Romeo Forum
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Bank 1 bank 2 which is which?

I know it's been asked before but can't seem to find the thread.
Can anyone tell me which is which on a 2.0JTS? as trying to fault find some lambda faults on my 156
Bank 1 sensor 1
Bank 1 sensor 2
Bank 2 sensor 1
Bank 2 sensor 2
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I've just asked exaclty the same question a couple of days ago! Not Lambda sensors is it??

Anyway, I got one very helpful response:

Bank 1 is the timing belt end and Bank 2 is the gearbox end of the engine.
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sensor 1 is PRE-cat

sensor 2 is POST-cat
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