OBD Guide
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B2418

Headlight Beam Level Control Motor Right Malfunction

B2418 is an OBD-II diagnostic trouble code meaning: Headlight Beam Level Control Motor Right Malfunction. Common causes: malfunction of the headlight adjustment motor, wiring harness damage. Estimated repair cost: $56–222.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Inability to adjust the angle of the right headlight
  • Headlights do not shine correctly (too high/low)
  • Error message on the dashboard

Causes

  • Malfunction of the headlight adjustment motor
  • Wiring harness damage
  • Short circuit or open circuit
  • Problems with the control unit

How to Fix

  1. Diagnose the engine control circuit
  2. Check motor resistance
  3. Inspect the wiring harness for damage
  4. Replace the adjustment motor if necessary
  5. Reflash or replace the control unit (in rare cases)

Related codes

B2417B2419B2420

FAQ

What does the B2418 code mean?

B2418 is an OBD-II diagnostic trouble code that indicates: Headlight Beam Level Control Motor Right Malfunction

What causes a B2418 error code?

The most common causes of B2418 include: Malfunction of the headlight adjustment motor; Wiring harness damage; Short circuit or open circuit; Problems with the control unit.

How do I fix a B2418 diagnostic trouble code?

To fix B2418: Diagnose the engine control circuit. Check motor resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2418?

Limited driving only, diagnose soon

How much does it cost to fix B2418?

The estimated repair cost for B2418 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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