2006 Tacoma 4.0 P0340 code fix

Hey there everyone, my tacoma is throwing a P0340 code ( Catalyst system efficiency Below threshold bank 2 ) seems weird code isn’t thrown constantly just turns on after every month, doesn’t seem to be any issues but it’s annoying wondering what I can do to fix it ? Where should I start ?

 

P0430 with numbers what’s the next step?
Discussion in '2nd Gen. Tacomas (2005-2015)' started by Mike06toyota, Friday at 8:22 PM.

 

My truck will throw the same code every ~6 months. I clear the code and its fine. Your cat is probably on its way out. Begin planning on replacing them in the near-ish future.