OBD Guide
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B1C99

Right Corner Lamp Circuit Circuit Short

B1C99 is an OBD-II diagnostic trouble code meaning: Right Corner Lamp Circuit Circuit Short. Common causes: wiring harness damage, short circuit in headlight. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Right corner headlight does not work
  • Flashing or uneven headlight operation
  • Fuse blown
  • Burnt smell from wiring

Causes

  • Wiring harness damage
  • Short circuit in headlight
  • Oxidation of contacts
  • Faulty relay or fuse
  • Problems with the control unit

How to Fix

  1. Check the right corner headlight fuse and relay
  2. Inspect the wiring harness for damage
  3. Check headlight contacts for oxidation
  4. Replace the faulty headlight if necessary
  5. Test the control unit (if you suspect it is faulty)

Related codes

B1C98B1C9AB1C9B

FAQ

What does the B1C99 code mean?

B1C99 is an OBD-II diagnostic trouble code that indicates: Right Corner Lamp Circuit Circuit Short

What causes a B1C99 error code?

The most common causes of B1C99 include: Wiring harness damage; Short circuit in headlight; Oxidation of contacts; Faulty relay or fuse.

How do I fix a B1C99 diagnostic trouble code?

To fix B1C99: Check the right corner headlight fuse and relay. Inspect the wiring harness for damage. Check headlight contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1C99?

Limited driving only, diagnose soon

How much does it cost to fix B1C99?

The estimated repair cost for B1C99 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat