Yes bank 2 is on the driver's side.
Many things can cause the P0430 DTC; bad MAF sensor, bad AOS bellows, low fuel pressure etc. One of the O2 sensors could also have a loose connection, swapping could reveal something. Have you opened the oil fill cap while the car is running? Does the engine idle go up or down? Is the cap hard to take off?
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Jäger
300K Mile Club
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