Hello,
I just bought a 2002 Ap1 and it’s throwing some codes but I’m looking at P0155 right now. It says Bank 2 sensor 1, my question is if that is the same as bank 1 sensor 2? Based off what i read bank 1 sensor 2 is the o2 sensor on the cat, but i don’t see many posts with bank 2 sensor 1 for this car. Which 02 sensor is it,?

 

bank 1 sensor 1(upstream) 02 on header, bank 1 sensor 2 (downstream) 02 on cat.

 

Then what’s bank 2 sensor 1? That’s what it says for P0155

 

That sensor does not exist, not sure why you would get a code like that.
You mentioned there were other codes as well? Maybe try fix them first.

 

I don’t think the other codes are related to this though, looks like they are ABS related.
P0155 Oxygen Sensor Heater Circuit (Bank 2 Sensor 1)

61-1 Battery Voltage Malfunction

54-1 Fail-Safe Relay Malfunction

42-1 Front Left Wheel Lock