Engine-Codes.com
Engine-Codes – Buick – B3718 Buick

B3718 Buick Code - Front Wiper Relay Drive Circuit High

Quick Answer

The B3718 Buick code indicates a problem with the front wiper relay drive circuit being too high. Common causes include Faulty front wiper relay, Damaged wiring in the front wiper circuit, Defective front wiper 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
B3718 Buick indicates Front Wiper Relay Drive Circuit High.
Common causes
Common causes include Faulty front wiper relay, Damaged wiring in the front wiper circuit, Defective front wiper 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 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B3718 Buick Description

The B3718 Buick code indicates a problem with the front wiper relay drive circuit being too high. In simpler terms, this means that there is an issue with the electrical circuit that controls the front windshield wipers in the vehicle. The front wiper relay is responsible for activating the wipers when needed, and a high circuit can disrupt this function.

OBDII Code B3718 Buick - Front Wiper Relay Drive Circuit High
B3718 Buick Code - Front Wiper Relay Drive Circuit High

Common Causes of B3718 Buick

  1. Faulty front wiper relay.
  2. Damaged wiring in the front wiper circuit.
  3. Defective front wiper motor.
  4. Corrosion or loose connections in the electrical system.
  5. Water damage to the front wiper components.

Symptoms of B3718 Buick

  1. Front windshield wipers not working at all.
  2. Front windshield wipers operating erratically.
  3. Front windshield wipers only working on certain settings.
  4. Front windshield wipers getting stuck in one position.

How to Fix B3718 Buick

  1. Begin by conducting a thorough inspection of the front wiper relay, wiring, and motor to identify any visible damage or issues.
  2. Test the front wiper relay using a multimeter to determine if it is functioning properly.
  3. Check the wiring for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  4. Test the front wiper motor to ensure it is receiving the correct voltage and functioning correctly. Replace if necessary.
  5. Clear any debris or obstructions that may be affecting the front windshield wipers' operation.

Cost to Fix B3718 Buick

The typical repair costs for addressing a B3718 Buick code can vary depending on the specific issue causing the high circuit. On average, the parts needed for this repair, such as a new front wiper relay or motor, can range from $50 to $200. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It is advisable to check with local auto repair shops for a more accurate estimate based on your vehicle's make and model.

Need more information about the B3718 Buick code?

Need more information on how to fix the B3718 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3718 Buick 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 B3718 Buick Code

1. What does the OBDII code B3718 mean on a Buick?

The B3718 code indicates a problem with the Front Wiper Relay Drive Circuit, specifically a high voltage issue.

2. What are the common symptoms of B3718 on a Buick?

Symptoms may include non-functional or erratic windshield wipers, wipers stuck in one position, or intermittent operation.

3. What causes the B3718 code to appear on a Buick?

Common causes include a faulty wiper relay, damaged wiring or connectors in the wiper circuit, or a malfunctioning body control module (BCM).

4. Can I drive my Buick with the B3718 code?

While it may be safe to drive, it’s not recommended if wipers are non-functional, as visibility in adverse weather can be severely compromised.

5. How is the B3718 code diagnosed on a Buick?

A technician will inspect the front wiper relay, check for damaged wiring or connectors, and use a scan tool to test the BCM and wiper system.

6. How do I fix the B3718 code on my Buick?

Repairs may include replacing the faulty wiper relay, repairing damaged wiring, or reprogramming or replacing the BCM if necessary.

7. How much does it cost to fix the B3718 code on a Buick?

Repair costs can vary but typically range from $100 to $300, depending on the root cause and labor rates.

8. Can a bad wiper motor cause the B3718 code on a Buick?

While rare, a malfunctioning wiper motor can sometimes contribute to the issue if it creates abnormal electrical resistance.

9. Will clearing the B3718 code fix the issue permanently?

Clearing the code may temporarily reset the system, but the underlying issue must be addressed to prevent the code from returning.

10. Can I fix the B3718 code on my Buick myself?

If you’re comfortable with basic electrical diagnostics, you can check the relay and wiring. However, more complex issues like BCM faults may require professional help.

Discuss the causes and fixes for B3718 Buick OBDII Code

Submit a New Comment

Code B3718 Buick comments

No comments found for this page.