OBD Guide
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U1524

Headlamp Control Module/Headlamp Leveling Control Module Lost Communication With Right Headlamp On LIN Bus

U1524 is an OBD-II diagnostic trouble code meaning: Headlamp Control Module/Headlamp Leveling Control Module Lost Communication With Right Headlamp On LIN Bus. Common causes: open or short circuit in the lin bus circuit, damage to the wiring harness to the right headlight. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Right headlight malfunction (does not turn on, flashes)
  • Error on the dashboard
  • Incorrect operation of the headlight level adjuster
  • Headlights work in emergency mode

Causes

  • Open or short circuit in the LIN bus circuit
  • Damage to the wiring harness to the right headlight
  • Malfunction of the headlight control module
  • Problems with power supply to the right headlight
  • Oxidation of contacts in connectors

How to Fix

  1. Check the integrity of the wiring harness to the right headlight
  2. Inspect connectors for oxidation or damage
  3. Check the voltage at the right headlight
  4. Scan other modules for communication errors
  5. If necessary, replace the headlight control module or the right headlight

Related codes

U1523U1525U1510

FAQ

What does the U1524 code mean?

U1524 is an OBD-II diagnostic trouble code that indicates: Headlamp Control Module/Headlamp Leveling Control Module Lost Communication With Right Headlamp On LIN Bus

What causes a U1524 error code?

The most common causes of U1524 include: Open or short circuit in the LIN bus circuit; Damage to the wiring harness to the right headlight; Malfunction of the headlight control module; Problems with power supply to the right headlight.

How do I fix a U1524 diagnostic trouble code?

To fix U1524: Check the integrity of the wiring harness to the right headlight. Inspect connectors for oxidation or damage. Check the voltage at the right headlight. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1524?

Limited driving only, diagnose soon

How much does it cost to fix U1524?

The estimated repair cost for U1524 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat