Hey, all

My buddy has a 2006 STi. It was recently in a front end collision. After parts replaced and body repaired, he has his ABS light on and has been getting misfire codes on all cylinders. We changed his spark plugs, ignition coils, and his fuel pump. Nothing seems to be getting rid of the misfiring. I clear the codes then they come back. Is there something else we should check or is it related to the ABS light? Thank in advance

 

I read a while back of some guy that had a misfire code that couldn't be sourced out... It turned out to be a bad ground causing that, mate that'll help

 

Check all the ground connections on the wiring harness. Also check the harnesses running into the spark plug boots. They could be backwards or not connected properly. But common problem is the grounds. Me and my brother had a mis fire on cylinder 1 and we found a wire that was not connected properly and ground wasn't on properly. Make sure you check all connections for the harness. Make sure all are secure and can't just pull out. Also check the teeth on the connections he could have had some break in the collision.