LAD572001

Ok, is this something I can check or replace myself? Remember I am a newbe and I am not firmialer with the term left bank or right bank. But I trying to save some money here so I am willing to learn. Any help would be great. :help:

The diagnostic test returned the following codes: P0420 - CAT EFFICIENCY LOW BANK 1 P0430 - CAT EFFICIENCY LOW BANK 2 P1110 - MFR CTRLLED FUEL AND AIR METERING I was told that these codes indicate that the O2 sensor maybe bad.

Help, I need to replace the oxygen sensor in my 01 Pathfinder and anyone tell me where is located. This is an $80 part online but the dealer wants to charge me $300 for parts and labor. I understand that it can be located in two different places.

Help, I need to replace the oxygen sensor in my 01 Pathfinder and anyone tell me where is located. This is an $80 part online but the dealer wants to charge me $300 for parts and labor. I understand that it can be located in two different places.