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Engine-Codes – Generic – B3819

B3819 Code - Left Rear Window Up Control Circuit

Quick Answer

The B3819 diagnostic trouble code relates to the left rear window up control circuit in a vehicle. Common causes include Faulty window switch, Damaged wiring or connectors, Failed window motor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B3819 indicates Left Rear Window Up Control Circuit.
Common causes
Common causes include Faulty window switch, Damaged wiring or connectors, Failed window motor.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code B3819 Description

The B3819 diagnostic trouble code relates to the left rear window up control circuit in a vehicle. This code indicates that there is a malfunction in the circuit responsible for controlling the left rear window when it is being raised. The control circuit is an essential part of the power window system, allowing the driver or passengers to operate the window with the press of a button. When this circuit is not functioning correctly, it can lead to the window being stuck in a certain position or not responding to the controls.

OBDII Code B3819 - Left Rear Window Up Control Circuit
B3819 Code - Left Rear Window Up Control Circuit

Common Causes of B3819

  1. Faulty window switch.
  2. Damaged wiring or connectors.
  3. Failed window motor.
  4. Defective window regulator.
  5. Blown fuse related to the window circuit.

Symptoms of B3819

  1. Left rear window is stuck in a certain position.
  2. Window does not respond to control inputs.
  3. Unusual noises when operating the window.
  4. Window moves slowly or intermittently.
  5. Window may move in the wrong direction.

How to Fix B3819

  1. Begin by inspecting the window switch for any visible damage. Replace the switch if necessary.
  2. Check the wiring and connectors in the left rear window circuit for any signs of wear or corrosion. Repair or replace damaged components.
  3. Test the window motor to ensure it is functioning correctly. Replace the motor if it is faulty.
  4. Inspect the window regulator for any damage or wear. Replace the regulator if needed.
  5. Check and replace any blown fuses related to the window circuit.

Cost to Fix B3819

The cost of repairing the left rear window up control circuit can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the repair costs for this type of issue can range from $150 to $500, including parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. In general, auto repair shops typically charge between $80 and $150 per hour for labor, but rates may differ based on location and other factors.

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Code B3819 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B3819 Code

1. What does OBDII code B3819 mean?

B3819 indicates a fault in the left rear window up control circuit, often caused by wiring, a faulty switch, or a motor issue.

2. What are the symptoms of code B3819?

Symptoms include the left rear window not moving up, intermittent operation, or unresponsiveness when using the controls.

3. What causes code B3819 to appear?

Common causes include damaged wiring, a malfunctioning window switch, a defective window motor, or poor electrical connections.

4. Can I still drive my car with code B3819?

Yes, but the left rear window may not function properly, which could be inconvenient or compromise weather protection.

5. How do you diagnose code B3819?

Diagnosis involves checking the wiring and connectors for damage, testing the window switch and motor for proper operation, and scanning for additional codes.

6. How can I fix code B3819?

Repairs may include replacing damaged wiring, installing a new window switch or motor, or cleaning corroded connectors.

7. Is code B3819 common in all vehicles?

No, it is specific to vehicles with advanced body control systems and may occur more frequently in certain makes and models.

8. Can a blown fuse cause code B3819?

Yes, a blown fuse in the power window circuit can cause the code by interrupting electrical flow to the left rear window.

9. How much does it cost to fix code B3819?

Repair costs can vary, typically ranging from $50 to $300 depending on whether the issue is with wiring, the switch, or the motor.

10. Can resetting the vehicle’s computer clear code B3819?

Clearing the code may temporarily remove it, but if the underlying issue is not resolved, the code will return.

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