OBD Guide

B1372

Left Rear Door Handle Unlock Circuit No Sub Type Information

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Left rear door unlock does not work
  • The door does not open with the button or remote key
  • Hazard warning light flashes when attempting to unlock

Causes

  • Open or short circuit in wiring harness
  • Unlock solenoid valve malfunction
  • Problem with the door control unit
  • Corrosion of contacts or connectors

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the solenoid valve
  3. Diagnose the door control unit
  4. Clean or replace corroded contacts

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