AutoCodes – Chevrolet – B3875 2015 Chevrolet Silverado

B3875 2015 Chevrolet Silverado Code - Windshield Wiper High Speed Relay Circuit

Quick Answer

The windshield wiper motor is controlled by the Body Control Module (BCM) through the windshield wiper replay and the windshield wiper speed control relay. Common causes include Faulty Windshield Wiper Relay, Windshield Wiper Relay harness is open or shorted, Windshield Wiper Relay 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: B3875 2015 Chevrolet Silverado indicates Windshield Wiper High Speed Relay Circuit.
Common causes: Common causes include Faulty Windshield Wiper Relay, Windshield Wiper Relay harness is open or shorted, Windshield Wiper Relay 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 375

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 14, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3875 2015 Chevrolet Silverado Description

The windshield wiper motor is controlled by the Body Control Module (BCM) through the windshield wiper replay and the windshield wiper speed control relay. When low speed windshield wiper operation is requested, the BCM will apply voltage to the windshield wiper relay control circuit. This will cause the contacts in the windshield wiper relay to close and apply B+ to the windshield wiper motor through the windshield wiper low speed control circuit, enabling low speed wiper operation. When high speed windshield wiper operation is requested, the body control module continues to apply voltage to the windshield wiper relay control circuit and also applies ground to the windshield wiper speed control relay control circuit. This will cause the contacts in the windshield wiper speed control relay to close and apply B+ to the windshield wiper motor through the windshield wiper high speed control circuit, enabling high speed wiper operation. When the windshield wiper request is no longer present, the contacts in the windshield wiper relay and windshield wiper speed control relay will open, removing B+ from the wiper motor control circuits. The windshield wiper motor will continue to operate using a discrete B+ circuit provided by the BCM until the wipers are in the park position.

OBDII Code B3875 2015 Chevrolet Silverado - Windshield Wiper High Speed Relay Circuit - AutoCodes.com — B3875 2015 Chevrolet Silverado Code - Windshield Wiper High Speed Relay Circuit

What does this mean?

What are the Possible Causes of the DTC B3875 2015 Chevrolet Silverado?

Faulty Windshield Wiper Relay
Windshield Wiper Relay harness is open or shorted
Windshield Wiper Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3875 2015 Chevrolet Silverado?

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 B3875 2015 Chevrolet Silverado 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 B3875 2015 Chevrolet Silverado code?

Need more information on how to fix the B3875 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3875 2015 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 B3875 2015 Chevrolet Silverado Code

1. What are common symptoms of OBDII code B3875 in a 2015 Chevrolet Silverado related to the Windshield Wiper High Speed Relay Circuit?

- Common symptoms include the windshield wipers operating only at one speed or not working at all.

2. What are some possible causes of OBDII code B3875 in a 2015 Chevrolet Silverado?

- Possible causes include a faulty high-speed relay, damaged wiring or connectors, or a malfunctioning wiper switch.

3. How can I diagnose the Windshield Wiper High Speed Relay Circuit issue in my 2015 Chevrolet Silverado?

- Use a multimeter to test the continuity of the relay, inspect the wiring and connectors for any damage, and check the wiper switch for proper functionality.

4. Is it safe to continue driving my 2015 Chevrolet Silverado with OBDII code B3875 related to the Windshield Wiper High Speed Relay Circuit?

- It is not recommended to drive in heavy rain or adverse weather conditions without fully functional windshield wipers. It is best to address the issue promptly.

5. Can I repair the Windshield Wiper High Speed Relay Circuit issue in my 2015 Chevrolet Silverado myself?

- If you have experience with automotive electrical systems and the necessary tools, you may be able to repair the issue yourself by replacing the faulty relay or repairing damaged wiring.

6. What are the potential risks of ignoring OBDII code B3875 in a 2015 Chevrolet Silverado?

- Ignoring the issue can lead to safety concerns, as the windshield wipers are crucial for maintaining visibility during inclement weather, increasing the risk of accidents.

7. How much does it typically cost to repair OBDII code B3875 related to the Windshield Wiper High Speed Relay Circuit in a 2015 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $50 to $200 for parts and labor.

8. Are there any preventive measures to avoid encountering OBDII code B3875 in my 2015 Chevrolet Silverado in the future?

- Regularly inspecting and maintaining the windshield wiper system, including checking for any signs of wear or damage, can help prevent issues with the high-speed relay circuit.

9. Can extreme weather conditions impact the functionality of the Windshield Wiper High Speed Relay Circuit in a 2015 Chevrolet Silverado?

- Yes, extreme heat or cold can potentially affect the performance of electrical components, including the relay, so it is important to keep the system well maintained.

10. How long does it typically take to repair OBDII code B3875 related to the Windshield Wiper High Speed Relay Circuit in a 2015 Chevrolet Silverado?

- Depending on the exact cause of the issue and the availability of parts, repairs can usually be completed within a few hours to a day by a qualified mechanic.