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Thank you James, that is what I thought too but was not 100%

Hello guys, would appreciate your comments. I get error codes P2234 and P1140, the OBDeleven code reader tells me they are the O2 sensors on bank 2, up and downstream. Fine but which one is bank 1 and which one is bank 2 when you are in front of the car looking at the engine in front of you? would h...