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.
2002 Toyota PriusFACTORY OEM SERVICE PROCEDURE
Hybrid Vehicle Control System DTCS
HYBRID VEHICLE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B2799 | IMMOBILIZER MALFUNCTION |
| C2692, C2693 | REGENERATIVE BRAKE CHECK |
| P1120 | ACCELERATOR PEDAL POSITION SENSOR CIRCUIT MALFUNCTION |
| P1520 | STOP LIGHT SWITCH (CRUISE CONTROL SYSTEM) MALFUNCTION |
| P1566 | CRUISE CONTROL SYSTEM MALFUNCTION |
| P1600 | BATT MALFUNCTION |
| P1780 | PARK/NEUTRAL POSITION SWITCH SYSTEM MALFUNCTION |
| P3000 | HV BATTERY MALFUNCTION |
| P3001 | HV BATTERY ECU MALFUNCTION |
| P3004 | POWER CABLE MALFUNCTION |
| P3100 | HV ECU MALFUNCTION |
| P3101 | ENGINE SYSTEM MALFUNCTION |
| P3105 | BATTERY ECU COMMUNICATION CIRCUIT MALFUNCTION |
| P3106 | ECM COMMUNICATION CIRCUIT MALFUNCTION |
| P3107 | AIRBAG ECU COMMUNICATION CIRCUIT MALFUNCTION |
| P3108 | A/C AMPLIFIER COMMUNICATION CIRCUIT MALFUNCTION |
| P3109 | BRAKE ECU COMMUNICATION CIRCUIT MALFUNCTION |
| P3110 | IGCT RELAY MALFUNCTION |
| P3115 | SYSTEM MAIN RELAY MALFUNCTION |
| P3120 | HV TRANSAXLE MALFUNCTION |
| P3125 | CONVERTER & INVERTER ASSEMBLY MALFUNCTION |
| P3130 | INVERTER COOLING SYSTEM MALFUNCTION |
| P3135 | CIRCUIT BREAKER SENSOR MALFUNCTION |
| P3140 | INTERLOCK MALFUNCTION |
| P3145 | VEHICLE SPEED SENSOR CIRCUIT 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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