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.
2012 Toyota Prius FourFACTORY OEM SERVICE PROCEDURE
Lighting System
LIGHTING SYSTEM DTC IDENTIFICATION
| DTC Code | Description |
|---|---|
| B1244 | Light Sensor Circuit Malfunction |
| B2450 | Initialization has not been Performed |
| B2452 | Height Control Sensor Data Out of Range When Initializing |
| B2416 | Height Control Sensor Malfunction |
| B241A | Rear Height Control Sensor |
| B2430 | LED Headlight LH Circuit Malfunction |
| B2431 | LED Headlight RH Circuit Malfunction |
| B2420 | HL AutoLeveling ECU Failure |
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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