Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Toyota PriusFACTORY OEM SERVICE PROCEDURE
HV Battery Control System
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Diagnostic Trouble Code Chart
- Parts Location
- Terminals Of Ecu
- Circuit Inspection
- DTC P1600: Back Up Power Source Circuit Malfunction
- DTC P3001: Battery ECU Malfunction
- DTC P3002: HV ECU Communication Malfunction
- DTC P3005: High Voltage Fuse Snapped
- DTC P3006: Battery SOC Are Uneven
- DTC P3009: Leak Detected
- DTC P3010: Battery Total Resistance Malfunction
- DTC P3011-P3029: Battery Block # Malfunction
- DTC P3030: Battery Voltage Detective line Snapped
- DTC P3060: Battery Temperature sensor Circuit Malfunction
- DTC P3076: Abnormal Air Flow by Battery Cooling Fan
- DTC P3077: Battery Cooling Fan Motor Circuit Malfunction
- DTC P3115: HV Battery Current Sensor Malfunction
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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