I’m getting these Kremlin’s as well.. with OBD11 only actual faulty item other than generator problem was front right speed senso (A6 C7 year model 2011)… same time TPMS, ACC, parking break and other fault codes. Speed sensor I did change, same problem came back, now being evaluating this as multiple alarms and fault codes seems to go away or can be reset if I will plug charger to battery.. Car alternator was replaced by Plus Huolto Turku, Finland 2 years ago… I noticed that they did used some probably cheap reconditioned unit for this.. (don’t ever use this service, with few other things needed to be done end up doing same myself.. takes time but all so far are now working.. I will check the regulator matter next…