OBD Guide
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B16D3

Right DRL Lamp Control Circuit

B16D3 is an OBD-II diagnostic trouble code meaning: Right DRL Lamp Control Circuit. Common causes: burnt out drl lamp/led, open or short circuit in wiring harness. Estimated repair cost: $6–56.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Right DRL won't turn on
  • Right DRL flashing
  • Dashboard warning

Causes

  • Burnt out DRL lamp/LED
  • Open or short circuit in wiring harness
  • Faulty relay or fuse
  • Problems with the control unit
  • Contact corrosion

How to Fix

  1. Check the condition of the right DRL (lamp/LED)
  2. Inspect the wiring harness for damage
  3. Check fuses and relays
  4. Test the control circuit with a multimeter
  5. Clean contacts from corrosion
  6. If necessary, replace faulty components

Related codes

B16D2B16D4B16D5

FAQ

What does the B16D3 code mean?

B16D3 is an OBD-II diagnostic trouble code that indicates: Right DRL Lamp Control Circuit

What causes a B16D3 error code?

The most common causes of B16D3 include: Burnt out DRL lamp/LED; Open or short circuit in wiring harness; Faulty relay or fuse; Problems with the control unit.

How do I fix a B16D3 diagnostic trouble code?

To fix B16D3: Check the condition of the right DRL (lamp/LED). Inspect the wiring harness for damage. Check fuses and relays. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B16D3?

Limited driving only, diagnose soon

How much does it cost to fix B16D3?

The estimated repair cost for B16D3 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat