UK Car Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I'm Ron and I will be helping you today.Stand by for a moment while I prepare your answer.
Once you find and fix that "U" code, everything should be okay then. the "U" code is related to the BUS/communications line and this is what has to be addressed first.
You can unplug each module one at a time to find the problem one, OR you can attach a scan tool in bidirectional mode so you can ping each module and make commands of it to see how it responds which is the best way to do it.
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