Yup abs issue mines flashing the same crap just waiting on my scanner to arrive. Start buy checking the wiring to the hubs and see if any are visibly damaged, you can also clean the connectors with electric cleaner then spray some dielectric grease to protect them. There's a few things you can check yourself but you have to be willing to put in the effort or just take it to the shop.. Pay them a few bucks to scan it and tell you what the problem is.
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