Quote:
Originally Posted by gmendoza
hmm. The code P0420 is for catalyst efficiency below threshold. It also sounds like the cat is falling apart. Sounds to me like the code is legit.
Was the cat ever actually checked or were parts blindly thrown at it hoping to hit the problem?
|
The cat was changed 2x....
So far, we've changed the following re. this P0420 issue.
- ECU/ECM
- Cat 2x
- Exhaust (Stage-II) 2x
- O2 sensors
- Wiring Harnesses
- Cam (not related to the P0420, but was found to be wearing unevenly during the check)
It is getting very ridiculous....