OBD Guide

B0984

Left Headlamp Light Distribution Shutter Control Circuit Malfunction

B0984 is an OBD-II diagnostic trouble code meaning: Left Headlamp Light Distribution Shutter Control Circuit Malfunction. Common causes: open or short circuit in wiring harness, malfunction of the solenoid valve (solenoid). Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect distribution of light from the left headlight
  • Left headlight blinking or turning off
  • Error message on the dashboard

Causes

  • Open or short circuit in wiring harness
  • Malfunction of the solenoid valve (solenoid)
  • Problems with the curtain mechanism
  • Malfunction of the headlight control unit

How to Fix

  1. Check wiring harness for damage
  2. Test the solenoid valve (solenoid)
  3. Inspect the curtain mechanism for jamming
  4. Check the operation of the headlight control unit
  5. Replace faulty components

Related codes

Error B0984 by Vehicle Brand

FAQ

What does the B0984 code mean?

B0984 is an OBD-II diagnostic trouble code that indicates: Left Headlamp Light Distribution Shutter Control Circuit Malfunction

What causes a B0984 error code?

The most common causes of B0984 include: Open or short circuit in wiring harness; Malfunction of the solenoid valve (solenoid); Problems with the curtain mechanism; Malfunction of the headlight control unit.

How do I fix a B0984 diagnostic trouble code?

To fix B0984: Check wiring harness for damage. Test the solenoid valve (solenoid). Inspect the curtain mechanism for jamming. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B0984?

Limited driving only, diagnose soon

How much does it cost to fix B0984?

The estimated repair cost for B0984 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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