OBD Guide

B16D4

Right DRL Lamp Control Circuit Low

B16D4 is an OBD-II diagnostic trouble code meaning: Right DRL Lamp Control Circuit Low. Common causes: burnt out drl lamp, open or short circuit in wiring harness. Estimated repair cost: $6–56.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$6–56 (est.)

Symptoms

  • Right DRL lamp does not work
  • Right DRL lamp flashing
  • Error message on the dashboard

Causes

  • Burnt out DRL lamp
  • Open or short circuit in wiring harness
  • Faulty relay or fuse
  • Problems with the lighting control module

How to Fix

  1. Check the condition of the right DRL lamp
  2. Inspect the wiring harness for damage
  3. Check fuses and relays associated with the DRL circuit
  4. Scan the control module for additional errors
  5. Replace faulty components

Related codes

FAQ

What does the B16D4 code mean?

B16D4 is an OBD-II diagnostic trouble code that indicates: Right DRL Lamp Control Circuit Low

What causes a B16D4 error code?

The most common causes of B16D4 include: Burnt out DRL lamp; Open or short circuit in wiring harness; Faulty relay or fuse; Problems with the lighting control module.

How do I fix a B16D4 diagnostic trouble code?

To fix B16D4: Check the condition of the right DRL lamp. Inspect the wiring harness for damage. Check fuses and relays associated with the DRL circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B16D4?

Do not drive — repair immediately

How much does it cost to fix B16D4?

The estimated repair cost for B16D4 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat