AutoCodes – Chevrolet – B3875 2014 Chevrolet Silverado

B3875 2014 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 2014 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 367

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 2014 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 2014 Chevrolet Silverado - Windshield Wiper High Speed Relay Circuit - AutoCodes.com — B3875 2014 Chevrolet Silverado Code - Windshield Wiper High Speed Relay Circuit

What does this mean?

What are the Possible Causes of the DTC B3875 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the B3875 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3875 2014 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 2014 Chevrolet Silverado Code

1. What does the OBDII code B3875 mean on a 2014 Chevrolet Silverado?

Code B3875 indicates an issue with the windshield wiper high-speed relay circuit, which may prevent the wipers from operating correctly at high speeds.

2. What are the symptoms of code B3875 on a 2014 Chevrolet Silverado?

Common symptoms include the windshield wipers not working in high-speed mode, intermittent wiper operation issues, or the wipers stopping unexpectedly.

3. What causes the B3875 code on a 2014 Chevrolet Silverado?

The code is typically caused by a faulty high-speed wiper relay, damaged wiring or connectors in the wiper circuit, or a malfunctioning wiper motor.

4. How can I diagnose the B3875 code on my 2014 Chevrolet Silverado?

Start by checking the windshield wiper relay, inspecting the wiring and connectors for damage or corrosion, and testing the wiper motor for proper operation.

5. Can a blown fuse cause the B3875 code on a 2014 Chevrolet Silverado?

Yes, a blown wiper fuse can contribute to this code, as it disrupts power to the high-speed wiper circuit.

6. How do I fix the B3875 code on a 2014 Chevrolet Silverado?

Repair or replace the faulty windshield wiper relay, repair damaged wiring or connectors, or replace the wiper motor if necessary.

7. Is it safe to drive with the B3875 code on my 2014 Chevrolet Silverado?

Driving may be unsafe in poor weather conditions if the windshield wipers are not functioning properly, especially at high speeds.

8. How much does it cost to repair the B3875 code on a 2014 Chevrolet Silverado?

Repair costs vary but typically include $20â€“$50 for a replacement relay, $100â€“$300 for wiring repairs, or $200â€“$400 for a new wiper motor, plus labor.

9. Can I reset the B3875 code without fixing the problem?

Clearing the code without addressing the underlying issue will likely cause the code to return and may leave your wipers nonfunctional.

10. What tools are needed to troubleshoot the B3875 code on a 2014 Chevrolet Silverado?

Youâ€™ll need a diagnostic scan tool, a multimeter for testing electrical connections, and basic hand tools to access and replace components.

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