AutoCodes – Generic – B3715

B3715 Code - Windshield Wiper Relay Drive 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: B3715 indicates Windshield Wiper Relay Drive 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 2,908

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 B3715 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 B3715 - Windshield Wiper Relay Drive Circuit - AutoCodes.com — B3715 Code - Windshield Wiper Relay Drive Circuit

What does this mean?

What are the Possible Causes of the DTC B3715?

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 B3715?

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 B3715 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 B3715 code?

Need more information on how to fix the B3715 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3715 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3715 Buick — Windshield Wiper Relay Drive Circuit
B3715 Cadillac — Windshield Wiper Relay Drive Circuit
B3715 Chevrolet — Windshield Wiper Relay Drive Circuit
B3715 GMC — Windshield Wiper Relay Drive Circuit
B3715 Pontiac — Windshield Wiper Relay Drive Circuit
B3715 Saturn — Windshield Wiper Relay Drive Circuit

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 B3715 Code

What does the OBDII code B3715 indicate?

The OBDII code B3715 indicates a malfunction in the windshield wiper relay drive circuit, which can affect the operation of the windshield wipers.

What symptoms might I experience if my vehicle has a B3715 code?

Common symptoms include inoperative windshield wipers, intermittent wiper function, or wipers that operate erratically.

What are some possible causes of the B3715 code?

Possible causes include a faulty windshield wiper relay, damaged wiring in the relay circuit, a malfunctioning wiper control module, or a blown fuse.

How can I diagnose the B3715 code?

To diagnose B3715, check the windshield wiper relay and its connections, inspect the wiring for damage, test the control module, and verify that the fuses are intact.

What is the first step in fixing a B3715 code?

The first step is to visually inspect the windshield wiper relay and its wiring for any signs of damage or corrosion.

Can I clear the B3715 code, and will it come back?

Yes, you can clear the code using an OBDII scanner, but if the underlying issue isn't resolved, the code will likely return.

What tools do I need to repair the B3715 code?

You will need basic automotive tools, including a multimeter for electrical testing, a socket set for removing components, and an OBDII scanner for code reading.

Is it safe to drive with a B3715 code?

While it is technically safe to drive, inoperative wipers can be dangerous in adverse weather conditions, so itâ€™s advisable to address the issue promptly.

How much does it typically cost to repair a B3715 code?

Repair costs can vary widely depending on the cause but typically range from $50 to $300, including parts and labor.

Can I fix the B3715 code myself?

If you have basic automotive repair skills and tools, you may be able to diagnose and replace the faulty relay or repair damaged wiring yourself. Otherwise, itâ€™s best to consult a professional mechanic.