JDM_EK_621

ok i am having some probs. with my car and i am just wanting to know what puts your car into limp mode i have a 96 civic with a b16a motor.

i hit a damn raccoon a few weeks ago and i didn't realize it but it had cracked the welds on my header.. so i took it off re-welded it. and but it back on.. and when i was driving it just the next day the the CEL came on and through a code for the o2 sensor and put my car into limp mode. so i replaced the o2 sensor and now it through a code 43. and is still in limp mode i am getting tired of fighting it... damn raccoons