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.
2021 Honda Pilot EliteFACTORY OEM SERVICE PROCEDURE
Headlight Leveling Control Unit
HEADLIGHT LEVELING CONTROL UNIT DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description | DTC type |
|---|---|---|
| B2476 | Front Height Sensor failure | Signal error |
| B2477 | Rear Height Sensor failure | Signal error |
| B2479 | Auto Leveling Unit EEPROM error | Internal error |
| B2480 | VSP Sensor failure | Signal error |
| B2481 | Abnormal VSP Sensor Value | Signal error |
| B2482 | Combination switch Headlight switch signal error | Signal error |
| U1280 | B-CAN communication bus line error (BUS-OFF) | Loss of communication |
| U1281 | Auto leveling control unit lost communication with MICU | Loss of communication |
| U128D | Auto leveling control unit lost communication with Gauge control unit | Loss of communication |
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.
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