Low DC-Bus Voltage
â–¶ How to fix
Bad connection between MGU and propulsion battery, check connections.
What you'll see
Linear reduction of propulsion torque from MGS starts at 550V and ends at 500V
System reaction
Max allowed accelerating AC current is reduced linearly. Yellow OBD
Diagnostic depth
Detection
Evaluation Condition When ignore low DC bus bit <69J01301C12x06.htm> is not active. Set Condition Event is set if filtered voltage is below predefined level. Clear Condition Event is cleared when filtered voltage is above predefined level.
Possible cause
No power source connected on DC bus External power source with low DC bus voltage Attempt to enable without closing main contactor Fuse is blown Acceleration torque exceeds battery's limits (e.g. cold battery) Internal sensor failure