Hey guys, need some help here.
Had my CEL come on and pulled p0420. After some searching here, I replaced all 4 o2 sensors and it came back. Replaced the bank 1 cat with a weld in cat from the muffler shop.
Code came back last night. Am I missing something? Could the universal cat not work properly?
Had my CEL come on and pulled p0420. After some searching here, I replaced all 4 o2 sensors and it came back. Replaced the bank 1 cat with a weld in cat from the muffler shop.
Code came back last night. Am I missing something? Could the universal cat not work properly?