AutoCodes – Saturn – B3718 Saturn

B3718 Saturn Code - Front Wiper Relay Drive Circuit High

Quick Answer

The Body Control Module (BCM) monitors the control circuit of the wiper relay. Common causes include Faulty Front Wiper Relay, Front Wiper Relay harness is open or shorted, Front 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: B3718 Saturn indicates Front Wiper Relay Drive Circuit High.
Common causes: Common causes include Faulty Front Wiper Relay, Front Wiper Relay harness is open or shorted, Front 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 478

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 Mar 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3718 Saturn Description

The Body Control Module (BCM) monitors the control circuit of the wiper relay. The voltage level should be low while the wiper relay is de-energized and near system voltage when the relay is energized. After the BCM receives a low, intermittent, or mist signal from the wiper/washer switch, it responds by applying battery voltage through the wiper relay control circuit to the coil side of the relay, energizing the wiper relay. The Diagnostic Trouble Code (DTC) sets if the BCM detects a short to battery voltage in the wiper relay control circuit.

OBDII Code B3718 Saturn - Front Wiper Relay Drive Circuit High - AutoCodes.com — B3718 Saturn Code - Front Wiper Relay Drive Circuit High

What does this mean?

What are the Possible Causes of the DTC B3718 Saturn?

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

How to Fix the DTC B3718 Saturn?

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 B3718 Saturn 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 B3718 Saturn code?

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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 B3718 Saturn Code

1. What are common symptoms of OBDII code B3718 Saturn (Front Wiper Relay Drive Circuit High)?

- Common symptoms include malfunctioning front wipers, wipers not turning off, or erratic wiper movement.

2. What can cause the OBDII code B3718 Saturn to trigger?

- The code may be triggered by a faulty front wiper relay, damaged wiring, or a malfunctioning wiper motor.

3. How can I diagnose the cause of OBDII code B3718 Saturn?

- Use a diagnostic scanner to retrieve the code and check the front wiper relay, wiring connections, and wiper motor for any issues.

4. Is it safe to continue driving with OBDII code B3718 Saturn triggered?

- It is not recommended to drive with this code triggered, as it can lead to unpredictable wiper behavior and compromise visibility.

5. Can I repair OBDII code B3718 Saturn on my own?

- Depending on your automotive repair skills, you may be able to address the issue by replacing the front wiper relay, repairing damaged wiring, or fixing the wiper motor.

6. Are there any quick tips for fixing OBDII code B3718 Saturn?

- Check for loose or damaged wiring connections, ensure the front wiper relay is securely in place, and inspect the wiper motor for any visible damage.

7. How much does it cost to repair OBDII code B3718 Saturn at a mechanic?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay for diagnostic time, parts, and labor, which can range from $100 to $300 or more.

8. Can extreme weather conditions trigger OBDII code B3718 Saturn?

- Yes, extreme weather conditions like heavy rain, snow, or ice can put additional strain on the front wiper system and potentially trigger this code.

9. Will resetting the OBDII code B3718 Saturn make the issue go away?

- Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

10. How can I prevent OBDII code B3718 Saturn from triggering again in the future?

- Regularly inspect and maintain your front wiper system, including checking for proper operation, keeping the windshield clean, and addressing any issues promptly to prevent code recurrence.