- Jul 29, 2022
- Reaction score
I’m working on my wife’s 2011 2.4. Months ago I got a P0420 code. I saw there was a recall for the cat, checked with the dealer, they said we missed the deadline for it. Had a bad smell, rough idle. So I figured it was a bad cat, replaced it with a new one, plus both o2 sensors. Code went away, but then had a random cylinder misfire code pop up. I did plugs, coils, cleaned the MAF, throttle body and pcv tubing. Code went away but then there was a new one, camshaft position sensor. So I replaced both of those. All codes went away for a few months and it was running better than ever. Now I’m getting a P0420 code again with a rough idle. I’m looking for some insight on what else could be causing the issue. Thanks!