2003 Hyundai Elantra
Hi. A while back the CEL came on and my mechanic replaced one of the 02 sensors. It was part # C5010111328.
Since then the CEL came back and I am now reading three error codes:
When I took it back he said it might be the other O2 sensor that needs to be replaced. Now, I am no expert but since the error code is for bank 2, I am guessing the downstream o2 sensor is what needs to be replaced, but I'm not sure. Moreover, I don't know what the other error codes would be for.
Since my mechanic is on vacation and I'm trying to get the car to pass emissions I'm trying to figure this out on my own and save some $ by not taking it into the shop.
Any help would be appreciated.