Originally Posted by lecchilo
today, i cut out my cats, put in o2 sims and something weird happened.... when everythign was done, the CEL came on and gave out the code for pre cat sensors heating something... p0155 i think, 1337 bmw code. weird thing is, it won't turn off... we tried erasing the code with both peake tool or regular obdII tool and it won't erase it....
oh we also tried disconnecting the battery for a while..
lol jk, but i have no idea man, i would suggest emailing whoever you bought your 02 sims from or the actual company that made em