BDU shutdown sequence failed, contactors was open during load
• Check for other DTC that can indicate why the contactors opened during load. Such as cell over voltage, current out of range or interlock loop open. • If it happens only one or two times between two service intervals, reset DTC. If the error appear more frequently continue with next action • Check VCB system from short circuits. Use DTC(0286 Current out of range) actions
What you'll see
No driver-visible symptom recorded.
System reaction
DTC indicate problem with the shutdown sequence.
Diagnostic depth
Contactor was opened with current, exceeding its threshold value.
• Other emergency error occurred that for safety reasons forced the contactors to open immediately. • 24V power or GND loss on the contactor unit. • A uncontrollable DC-link load was active more than 1 second that triggered the disconnect timeout. • Packs might be unevenly balanced in terms of SOC/OpenVoltage.