2010 12v Fummins
I’ve got it running and the tach is sending rpm signal to the dash but I still have too jump start it and the key won’t send the starter power/signal and tips in what to do next or what I have wrong to get the key to work and I have these codes


I would have bet it was the P1260 Theft Detected. But Guy would know better for sure. Follow what he tells you and he will get you there.