OBD Guide

B3950

Left Rear Turn Signal Circuit

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

Symptoms

  • Left rear turn signal does not work
  • Rapid flashing of the direction indicators on the dashboard
  • Error message on display

Causes

  • Burnt out lamp
  • Open circuit
  • Poor contact in the connector
  • Wiring harness damage
  • Control unit malfunction

How to Fix

  1. Check the condition of the turn signal lamp
  2. Inspect connectors and wires for damage
  3. Check continuity with a multimeter
  4. Replace faulty components
  5. Reset the error code and check the system operation

Related codes

Error B3950 by Vehicle Brand