Running an O2 Sim and have CEL

[Spyder327]

Anyone else here running URD's O2 Sim and still getting a P0420 code?
My CEL comes on from time to time due to the non-toyota cats i have in the front. I installed the O2 sim awhile back and the light came on for the P0420 shortly after it. I reset it and hadn't seen it in 500 miles or so but got it again a few days ago. I reset it and just got it again today...

anyone else have that happen to them?

 

[Twisted Creations]

not having that problem, could be the cats, but I would check all your connections. did you solder? or use quick connects? not doubting your install abilities, but it does sound like maybe a faulty wire connection :dontknow: