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.
2003 Toyota PriusFACTORY OEM SERVICE PROCEDURE
HV Battery Control System DTCS
HV BATTERY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| P1600 | Back Up Power Source Circuit Malfunction |
| P3001 | Battery ECU Malfunction |
| P3002 | HV ECU Communication Malfunction |
| P3005 | High Voltage Fuse Snapped |
| P3006 | Battery SOC Are Uneven |
| P3009 | Leak Detected |
| P3010 | Battery Total Resistance Malfunction |
| P3011-P3029 | Battery Block # Malfunction |
| P3030 | Battery Voltage Detective line Snapped |
| P3060 | Battery Temperature sensor Circuit Malfunction |
| P3076 | Abnormal Air Flow by Battery Cooling Fan |
| P3077 | Battery Cooling Fan Motor Circuit Malfunction |
| 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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