N63 - Drivetrain Malfunction Warning with Quantity Control Valve Faults. The Drivetrain Malfunction message is displayed and any of the following faults for the quantity control valves are stored in the DME. 11C302 - Fuel- supply control valve 2, activation: short circuit to ground or open circuit 11C401 - Quantity control valve, activation: short circuit to ground 1F4C04 - Relay, quantity control valve: open circuit The most likely cause is the high fuel pressure quantity control valve relay (K6342) loose connection at the electrical connector.
