High DC-Bus Voltage
â–¶ How to fix
Bad connection between MGU and propulsion battery, check connections.
What you'll see
Linear reduction of generating torque from MGS starts at 750V and ends at 800V
System reaction
Max allowed braking AC current is reduced linearly. Yellow OBD
Diagnostic depth
Detection
Evaluation Condition Always. Set Condition Event is set if filtered voltage is above predefined level. Clear Condition Event is cleared if filtered voltage is below predefined level.
Possible cause
Internal sensor failure. Using braking torque with with no battery or bleeder connected to DC bus. Braking power exceeds battery's limits (e.g. cold battery). Bad current control settings. External power source on DC bus raises the voltage.