Headlamp Leveling Sensor Malfunction
The headlamp leveling sensor has a malfunction.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
This code means that the sensor that adjusts your headlights based on the vehicle's load or height is not working correctly, which can lead to poor visibility while driving at night.
What the computer is actually seeing
The vehicle's computer is trying to read the angle of the headlights or the height of the vehicle but is getting a signal that does not match expected values, typically indicating a voltage or resistance reading is out of range.
What a healthy reading looks like
The headlamp leveling sensor should provide a voltage signal between 0.5V to 4.5V depending on the vehicle's load position.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors for the headlamp leveling sensor; look for damage or corrosion.
- 22. Check the voltage at the sensor connector with the ignition on; it should be between 0.5V and 4.5V. If it's outside this range, repair or replace wiring as necessary.
- 33. If wiring is good, test the headlamp leveling sensor by removing it and checking resistance; compare to service manual specs.
- 44. If the sensor is faulty replace it and clear codes.
Common causes
- Faulty headlamp leveling sensor
- Damaged wiring or connectors
- Corroded or poor electrical connections
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable, but you might have poor headlight adjustment at night, affecting visibility.
Will this code come back after I clear it?
If the issue with the sensor or wiring is not fixed, the code will likely reappear.
What happens if I ignore this code?
Ignoring this could lead to improper headlight aim, increasing the risk of accidents at night.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →