hello guys, I hope someone can help me> I have a new shape ford transit from 2015, with electrical problem. Every few minutes there are random lights come on the dash, engine is still running fine but no power. No DTC faults on the ecu. the charging voltage is a bit high 15.2V but I have seen fords with smart alternators delivering 15V.

Any idea how I can diagnose that, or what could be faulty?