I'm throwing a code 20 on my 93 Prelude for the 4ws. I know the code is for the front sub steering angle sensor, front main steering wheel sensor, and the 4ws unit. Anyone know what to do about these. I have no idea how to check and see which one of theses is bad or not. Any input would help alot.

 

I was throwing the same codes.....I took the unit apart and re-soldered it,using a write up,I belive from here or bay area prelude,ande now it works like a charm.Good luck