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  1. QP5 2003-2012
    Went to the dealer to diagnose the faults and clear them on my 2009 Quattroporte S 4.7 First the battery was replaced due to low voltage (P0301)(b1005)and (b-CAN line error,bus-off)(P0A04)” grounds were checked, it did clear the airbag fault. Also had U1602 line faulty. Second was U1715 side...