hello mate . Di dyou get to the bottom of this ? I work on mercedes b250e and I had this fault code U1C3BF1- sensor voltage of high voltage battery modulehas a malfunction . I replaced the HV battery - it dont need programming . I opened old battery to find 1 module faulty . I got tool for Tesla ...

hello to everybody
I got this mercedes in the workshop B250e with Tesla battery .
Fault codes
U1C03F1- HV battery control unit internal fault,
U1C61F1- Battery HV - Cell voltage too low,
U1C62F1- Battery HV Cell voltage too high .
Im using mercedes SD tool to diagnose it . Im looking to check ...