I just got my first CEl today and I used my SCT and it was code P0430 Catalyst System Efficiency Below Threshold (Bank 2). I have LT's, catted H, and Axlebacks and had it installed about 2 months ago. Does anyone know what this code exactly is?
Is it something I should lose sleep over

 

the pcm doesn't like the signal it's getting, from the
drivers side rear oxygen sensor.

 

Cracked exhaust or even leaks can through that code. If you have cheap Chinese made headers like Pypes you may want to go over your whole system.

 

LOL! No I don't have pypes, I have JBA American Made. But who knows these days everything is made in China now especially my artifical Xmas Tree.