OBD Guide

B3819

Left Rear Window Up Control Circuit

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

Symptoms

  • Left rear window regulator does not work
  • Intermittent operation of the window regulator
  • The glass goes up/down slowly

Causes

  • Open or short circuit in wiring harness
  • Window lift motor malfunction
  • Problems with the control unit
  • Oxidation of contacts or connectors

How to Fix

  1. Check wiring harness for damage
  2. Check the operation of the window lift motor
  3. Diagnose the control unit
  4. Clean or replace connectors

Related codes

Error B3819 by Vehicle Brand