OBD Guide

B3819

Left Rear Window Up Control Circuit

B3819 is an OBD-II diagnostic trouble code meaning: Left Rear Window Up Control Circuit. Common causes: open or short circuit in wiring harness, window lift motor malfunction. Estimated repair cost: $56–167.

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

FAQ

What does the B3819 code mean?

B3819 is an OBD-II diagnostic trouble code that indicates: Left Rear Window Up Control Circuit

What causes a B3819 error code?

The most common causes of B3819 include: Open or short circuit in wiring harness; Window lift motor malfunction; Problems with the control unit; Oxidation of contacts or connectors.

How do I fix a B3819 diagnostic trouble code?

To fix B3819: Check wiring harness for damage. Check the operation of the window lift motor. Diagnose the control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B3819?

Limited driving only, diagnose soon

How much does it cost to fix B3819?

The estimated repair cost for B3819 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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