The EV enters reduced power mode and acceleration is weak.
The inverter is derating because of an over-temperature or current-limit condition.
Suggested test plan
- Capture the derate reason from the scan tool.
- Check inverter cooling.
- Verify phase currents and motor condition.
- Repair cooling or replace the inverter.
Safety: High voltage can be lethal. Only trained technicians may work on an EV. Use rated PPE and follow the manufacturer isolation procedure. This is an educational model only.
Reduced power is a protection strategy, not the root fault. Diagnose the derate reason before replacing parts.