OBD Guide
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B163D

Front Left Turn Control Circuit Open

B163D is an OBD-II diagnostic trouble code meaning: Front Left Turn Control Circuit Open. Common causes: broken wire in the wiring harness, turn signal lamp malfunction. Estimated repair cost: $11–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • Left front turn signal does not work
  • blinking turn signals with increased frequency
  • no sound signal when turning on the turn signal

Causes

  • broken wire in the wiring harness
  • turn signal lamp malfunction
  • contact corrosion
  • problems with turn signal relay

How to Fix

  1. Check the serviceability of the left front turn signal lamp
  2. Inspect the wiring harness for breaks or damage
  3. Check contacts for corrosion or oxidation
  4. Test the turn signal relay
  5. Replace faulty components if necessary

Related codes

B163EB163CB163F

FAQ

What does the B163D code mean?

B163D is an OBD-II diagnostic trouble code that indicates: Front Left Turn Control Circuit Open

What causes a B163D error code?

The most common causes of B163D include: broken wire in the wiring harness; turn signal lamp malfunction; contact corrosion; problems with turn signal relay.

How do I fix a B163D diagnostic trouble code?

To fix B163D: Check the serviceability of the left front turn signal lamp. Inspect the wiring harness for breaks or damage. Check contacts for corrosion or oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B163D?

Limited driving only, diagnose soon

How much does it cost to fix B163D?

The estimated repair cost for B163D is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat