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.
2005 Toyota PriusFACTORY OEM SERVICE PROCEDURE
Automatic Transmission DTCS
AUTOMATIC TRANSMISSION DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| C2300 | ACT SYSTEM MALFUNCTION |
| C2301 | SHIFT CHANGING TIME MALFUNCTION |
| C2303 | RELAY MALFUNCTION (+B SHORT) |
| C2304 | OPEN OR SHORT CIRCUIT IN U PHASE |
| C2305 | OPEN OR SHORT CIRCUIT IN V PHASE |
| C2306 | OPEN OR SHORT CIRCUIT IN W PHASE |
| C2307 | POWER SOURCE MALFUNCTION |
| C2310 | OPEN OR SHORT CIRCUIT IN BATT |
| C2311 | HV COMMUNICATION LINE MALFUNCTION |
| C2312 | POWER SOURCE CONTROL ECU COMMUNICATION LINE MALFUNCTION |
| C2315 | HV SYSTEM MALFUNCTION |
| C2318 | LOW VOLTAGE ERROR (POWER SUPPLY MALFUNCTION) |
Factory Service Tools
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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.