Hey guys,

Just wanted to clarify I'm getting an P0300 code and P0420 code.
I know the 420 is cat eff below thershold drivers side.
My question is if this cat is bad will it give me this P0300 code or do I have another issue? Any help would be appreciated.

 

Yes it will give you a p0300 a clogged cat can cause a misfire and the p0300 is a random misfire code.hope this helps