OBD Guide
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B123B

Right Front Turn Indicator Circuit Short

B123B is an OBD-II diagnostic trouble code meaning: Right Front Turn Indicator Circuit Short. Common causes: short circuit in wiring harness, faulty turn signal lamp. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–89 (est.)

Symptoms

  • The right front turn signal does not work
  • The turn signal flashes more frequently
  • Warning on Radi instrument panel

Causes

  • Short circuit in wiring harness
  • Faulty turn signal lamp
  • Damage to contacts or connectors
  • Problems in the control module

How to Fix

  1. Check the condition of the turn signal lamp
  2. Inspect the wiring harness for damage
  3. Check contacts and connectors for corrosion or damage
  4. Diagnose the control module if necessary

Related codes

B123AB123CB123D

FAQ

What does the B123B code mean?

B123B is an OBD-II diagnostic trouble code that indicates: Right Front Turn Indicator Circuit Short

What causes a B123B error code?

The most common causes of B123B include: Short circuit in wiring harness; Faulty turn signal lamp; Damage to contacts or connectors; Problems in the control module.

How do I fix a B123B diagnostic trouble code?

To fix B123B: Check the condition of the turn signal lamp. Inspect the wiring harness for damage. Check contacts and connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B123B?

Do not drive — repair immediately

How much does it cost to fix B123B?

The estimated repair cost for B123B is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat