Hello all new member here. Ok I'm trying to help my dad with his kubota L4701 he had to replace the safety switch under the seat. Someone he knows was over and took screwdriver and shorted it across to find out the switch was bad after they did that it was giving an E-20 code. Well dad calls me and has me come help figure out what it was, hes not good working with computers, so I did a search and it comes up that it's a communication error. Well I discovered that it was a blown fuse (5amp main ecu) so I replaced it and we checked and error code was gone but it still will not start is there anything else that I'm possibly missing?