AutoCodes – Generic – B319A

B319A Code - Right Rear Window Switch

Quick Answer

The driver and passenger window motors supply 12 V signal circuits to their respective window switches, when a window switch has been activated, a switch closes providing a ground to the appropriate signal circuit causing the voltage to drop to 0 V. Common causes include Faulty Right Rear Window Switch, Right Rear Window Switch harness is open or shorted, Right Rear Window Switch circuit poor electrical connection. 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: B319A indicates Right Rear Window Switch.
Common causes: Common causes include Faulty Right Rear Window Switch, Right Rear Window Switch harness is open or shorted, Right Rear Window Switch circuit poor electrical connection.
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.

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Code Popularity 2,216

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B319A Description

The driver and passenger window motors supply 12 V signal circuits to their respective window switches, when a window switch has been activated, a switch closes providing a ground to the appropriate signal circuit causing the voltage to drop to 0 V. The window motor will detect the voltage drop in the signal circuit and will command the window to move in the desired direction.
The driver window master control switch also contains control switches for the passenger, left rear and right rear window functions. When a window switch is pressed, a serial data message is sent to the Body Control Module (BCM). The BCM examines the request and checks for messages from other power window motors that may prohibit window movement. If no prohibitive messages have been received, the BCM will send a serial data message to the passenger window motor or to the appropriate rear window switch which will perform the command as requested.

OBDII Code B319A - Right Rear Window Switch - AutoCodes.com — B319A Code - Right Rear Window Switch

What does this mean?

What are the Possible Causes of the DTC B319A?

Faulty Right Rear Window Switch
Right Rear Window Switch harness is open or shorted
Right Rear Window Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B319A?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B319A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B319A code?

Need more information on how to fix the B319A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B319A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B319A Buick — Right Rear Window Switch
B319A Cadillac — Right Rear Window Switch
B319A Chevrolet — Right Rear Window Switch
B319A GMC — Right Rear Window Switch

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 B319A Code

1. What are the common symptoms of OBDII code B319A related to the Right Rear Window Switch?

The common symptoms include the right rear window being inoperative or malfunctioning, the window not responding to the switch, or the window getting stuck in a certain position.

2. What are the possible causes of OBDII code B319A for the Right Rear Window Switch?

Possible causes may include a faulty right rear window switch, damaged wiring or connectors, a malfunctioning window motor, or a problem with the window regulator.

3. How can I diagnose the issue with the Right Rear Window Switch causing OBDII code B319A?

You can diagnose the issue by checking the wiring and connectors for any visible damage, testing the right rear window switch for proper functionality, inspecting the window motor and regulator for any issues, and using a scan tool to read the OBDII code.

4. Is it safe to continue driving with OBDII code B319A related to the Right Rear Window Switch?

It is generally safe to continue driving, but it is recommended to address the issue promptly to avoid inconvenience or potential safety hazards caused by a malfunctioning right rear window.

5. Can I repair OBDII code B319A for the Right Rear Window Switch myself?

Depending on your experience and tools available, you may be able to repair the issue yourself by replacing the right rear window switch, repairing any damaged wiring, or addressing any other identified problems. However, if you're unsure, it's best to seek professional help.

6. How much does it typically cost to repair OBDII code B319A related to the Right Rear Window Switch?

The cost of repair can vary depending on the specific cause of the issue. It could range from a simple switch replacement costing around $50 to more complex repairs involving the window motor or regulator, which could cost several hundred dollars.

7. Are there any preventive maintenance tips to avoid encountering OBDII code B319A for the Right Rear Window Switch?

Regularly inspecting the condition of the window switches, wiring, and components, as well as addressing any issues promptly, can help prevent encountering OBDII code B319A related to the Right Rear Window Switch.

8. Does OBDII code B319A for the Right Rear Window Switch affect other electrical components in the vehicle?

While the code specifically relates to the Right Rear Window Switch, electrical issues in one part of the vehicle can sometimes have secondary effects on other components. It's recommended to address the issue promptly to avoid further complications.

9. Can environmental factors, such as extreme temperatures, cause OBDII code B319A for the Right Rear Window Switch?

Extreme temperatures can sometimes affect electrical components, including the window switch, wiring, and motor, potentially leading to issues like OBDII code B319A. Proper maintenance and care can help mitigate these risks.

10. Is it necessary to reset the OBDII code B319A after repairing the issue with the Right Rear Window Switch?

Once the issue with the Right Rear Window Switch is repaired, it's recommended to reset the OBDII code using a scan tool to clear the error code from the vehicle's system and ensure accurate diagnostics in the future.