U1511
Headlamp Control Module/Headlamp Leveling Control Module Lost Communication With Left Headlamp On LIN Bus
U1511 is an OBD-II diagnostic trouble code meaning: Headlamp Control Module/Headlamp Leveling Control Module Lost Communication With Left Headlamp On LIN Bus. Common causes: open or short circuit in the lin circuit to the left headlight, left headlight malfunction. Estimated repair cost: $33–167.
Symptoms
- Left head light does not turn on
- Left headlight flashing
- Headlight leveling system error on the dashboard
- Headlights work, but do not change angle
- Lighting fault warning message
Causes
- Open or short circuit in the LIN circuit to the left headlight
- Left headlight malfunction
- Problems with the headlight control module
- Corrosion of contacts in connectors
- Wiring harness damage
How to Fix
- Check the integrity of the wiring to the left headlight
- Inspect connectors for corrosion
- Check the power and ground of the headlight
- Scan the LIN bus for errors
- If necessary, replace the left headlight or control module
Related codes
FAQ
What does the U1511 code mean?
U1511 is an OBD-II diagnostic trouble code that indicates: Headlamp Control Module/Headlamp Leveling Control Module Lost Communication With Left Headlamp On LIN Bus
What causes a U1511 error code?
The most common causes of U1511 include: Open or short circuit in the LIN circuit to the left headlight; Left headlight malfunction; Problems with the headlight control module; Corrosion of contacts in connectors.
How do I fix a U1511 diagnostic trouble code?
To fix U1511: Check the integrity of the wiring to the left headlight. Inspect connectors for corrosion. Check the power and ground of the headlight. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1511?
Limited driving only, diagnose soon
How much does it cost to fix U1511?
The estimated repair cost for U1511 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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