Engine-CodesBuick – B3708 Buick

B3708 Buick Code - Front Washer Motor Input High

Quick Answer

The B3708 Buick code indicates that there is a high input signal detected from the front washer motor. Common causes include Faulty front washer motor, Wiring or connection issues, Faulty washer fluid pump. 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
B3708 Buick indicates Front Washer Motor Input High.
Common causes
Common causes include Faulty front washer motor, Wiring or connection issues, Faulty washer fluid pump.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B3708 Buick Description

The B3708 Buick code indicates that there is a high input signal detected from the front washer motor. This means that the control module has detected a voltage that is outside of the normal range for the front washer motor, which could be caused by a variety of issues. The front washer motor is responsible for pumping washer fluid to the windshield to help clean it while driving. When this code is triggered, it can lead to issues with the functionality of the windshield washer system, potentially causing visibility problems for the driver.

OBDII Code B3708 Buick - Front Washer Motor Input High
B3708 Buick Code - Front Washer Motor Input High

Common Causes of B3708 Buick

  1. Faulty front washer motor
  2. Wiring or connection issues
  3. Faulty washer fluid pump
  4. Defective washer fluid level sensor
  5. Corrosion or debris blocking the washer system

Symptoms of B3708 Buick

  1. Windshield washer fluid not spraying onto the windshield
  2. Abnormal noise coming from the front washer motor
  3. Washer fluid leaking from the motor or hoses
  4. Washer fluid pump not activating when the washer switch is pressed

How to Fix B3708 Buick

  1. Begin by checking the wiring and connections to the front washer motor to ensure there are no loose or damaged wires.
  2. Test the front washer motor to determine if it is functioning properly. If it is found to be faulty, it will need to be replaced.
  3. Check the washer fluid pump and level sensor for any defects or malfunctions. Replace as necessary.
  4. Inspect the washer system for any blockages or debris that may be inhibiting the flow of washer fluid.
  5. Clear any obstructions and test the system to ensure proper functionality.

Cost to Fix B3708 Buick

The cost of repairing a B3708 Buick code can vary depending on the specific cause of the issue and the cost of parts and labor in your area. On average, the cost of replacing a front washer motor can range from $100 to $300, while other components like the washer fluid pump or level sensor may cost an additional $50 to $100 each. Labor costs can also vary, but typically range from $80 to $150 per hour. It's recommended to consult with a professional mechanic to get an accurate estimate for your specific vehicle.

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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 B3708 Buick Code

1. What does the OBDII code B3708 mean on a Buick?

The B3708 code indicates "Front Washer Motor Input High," meaning the vehicle's control module has detected an unusually high voltage in the front washer motor circuit.

2. What are the common symptoms of the B3708 code on a Buick?

Symptoms may include the windshield washer not functioning, intermittent washer operation, or the washer motor running continuously.

3. What causes the B3708 code to appear?

Common causes include a faulty washer motor, damaged wiring or connectors in the washer circuit, a failing control module, or a short to power in the washer motor circuit.

4. Can I still drive my Buick with the B3708 code active?

Yes, you can drive the car, but the windshield washer system may not work properly, which could impair visibility in adverse weather conditions.

5. How can I diagnose the B3708 code on my Buick?

Start by inspecting the washer motor, its wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage levels and continuity in the circuit.

6. How do I fix the B3708 code on a Buick?

Repairs may include replacing a defective washer motor, repairing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the control module if necessary.

7. Can a blown fuse cause the B3708 code?

A blown fuse is unlikely to trigger this specific code, but it’s worth checking the washer motor fuse as part of the diagnostic process.

8. How much does it cost to fix the B3708 code on a Buick?

Repair costs vary depending on the issue, ranging from $50 for simple wiring repairs to $200 or more if the washer motor or control module needs replacement.

9. Can I clear the B3708 code without fixing the issue?

You can clear the code temporarily with an OBDII scanner, but it will likely return unless the underlying issue is resolved.

10. What tools are needed to troubleshoot the B3708 code on a Buick?

You’ll need a multimeter, an OBDII scanner, and basic hand tools to check the washer motor, wiring, and connectors.

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