OBD Guide

B0985

Right Headlamp Light Distribution Shutter Control Circuit Malfunction

B0985 is an OBD-II diagnostic trouble code meaning: Right Headlamp Light Distribution Shutter Control Circuit Malfunction. Common causes: open or short circuit in control circuit, faulty solenoid or curtain drive. 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 right headlight
  • Adaptive lighting blinking or turning off
  • Error message on the dashboard

Causes

  • Open or short circuit in control circuit
  • Faulty solenoid or curtain drive
  • Wiring Harness Problems
  • Oxidation of contacts
  • Malfunction of the headlight control unit

How to Fix

  1. Check the integrity of the curtain control circuit
  2. Inspect connectors and contacts for oxidation
  3. Check the operation of the solenoid or curtain drive
  4. Scan the control unit for additional errors
  5. If necessary, replace the faulty component

Related codes

Error B0985 by Vehicle Brand

FAQ

What does the B0985 code mean?

B0985 is an OBD-II diagnostic trouble code that indicates: Right Headlamp Light Distribution Shutter Control Circuit Malfunction

What causes a B0985 error code?

The most common causes of B0985 include: Open or short circuit in control circuit; Faulty solenoid or curtain drive; Wiring Harness Problems; Oxidation of contacts.

How do I fix a B0985 diagnostic trouble code?

To fix B0985: Check the integrity of the curtain control circuit. Inspect connectors and contacts for oxidation. Check the operation of the solenoid or curtain drive. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B0985?

Limited driving only, diagnose soon

How much does it cost to fix B0985?

The estimated repair cost for B0985 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat