B3718 Code - Front Wiper Relay Drive Circuit High
Quick Answer
The B3718 code indicates a problem with the front wiper relay drive circuit in the vehicle. Common causes include Faulty front wiper relay, Wiring issues or shorts in the front wiper relay drive circuit, Corrosion or poor connections in the relay drive circuit. 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 indicates Front Wiper Relay Drive Circuit High.
- Common causes
- Common causes include Faulty front wiper relay, Wiring issues or shorts in the front wiper relay drive circuit, Corrosion or poor connections in the relay drive circuit.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B3718 Description
The B3718 code indicates a problem with the front wiper relay drive circuit in the vehicle. The front wiper relay is responsible for controlling the operation of the front windshield wipers. When this circuit is reading as high, it means that there is an issue with the voltage levels in the circuit, which could lead to the front wipers not functioning properly or at all. This can be a safety hazard, especially during inclement weather conditions when visibility is crucial.
Common Causes of B3718
- Faulty front wiper relay.
- Wiring issues or shorts in the front wiper relay drive circuit.
- Corrosion or poor connections in the relay drive circuit.
- Issues with the vehicle's control module sending incorrect signals to the front wiper relay.
- Electrical system malfunctions affecting the front wiper relay drive circuit.
Symptoms of B3718
- Front windshield wipers not responding to control inputs.
- Front windshield wipers operating erratically or inconsistently.
- Front windshield wipers getting stuck in one position.
- Front windshield wipers not turning off when the control switch is in the off position.
How to Fix B3718
- Begin by conducting a thorough inspection of the front wiper relay drive circuit to identify any visible damage, corrosion, or loose connections.
- Test the front wiper relay using a multimeter to determine if it is functioning properly or needs to be replaced.
- Check the wiring in the relay drive circuit for any signs of damage or shorts, repairing or replacing as necessary.
- Inspect the vehicle's control module for any faults or errors that could be affecting the front wiper relay operation.
- Clear the diagnostic trouble codes from the vehicle's system after completing the repairs and test the front windshield wipers to ensure they are functioning correctly.
Cost to Fix B3718
The typical repair costs for addressing a front wiper relay drive circuit high code can range from $150 to $300, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's recommended to check with local repair shops for a more accurate estimate based on your specific circumstances.
Need more information about the B3718 code?
Need more information on how to fix the B3718 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3718 code diagnosed by a professional: Find a repair shop in your area
Code B3718 Information for Specific Makes
- B3718 Buick — Front Wiper Relay Drive Circuit High
- B3718 Cadillac — Front Wiper Relay Drive Circuit High
- B3718 Chevrolet — Front Wiper Relay Drive Circuit High
- B3718 GMC — Front Wiper Relay Drive Circuit High
- B3718 Pontiac — Front Wiper Relay Drive Circuit High
- B3718 Saturn — Front Wiper Relay Drive Circuit High
Frequently Asked Questions about B3718 Code
1. What are common symptoms of OBDII code B3718 (Front Wiper Relay Drive Circuit High)?
- Common symptoms include the front wipers not working, wipers operating at an incorrect speed, or the wipers getting stuck in one position.
2. What are the possible causes of OBDII code B3718?
- Possible causes include a faulty wiper relay, damaged wiper motor, wiring issues, or a problem with the wiper switch.
3. How can I diagnose the Front Wiper Relay Drive Circuit High issue?
- Diagnose by checking the wiper relay, testing the wiper motor, inspecting the wiring for any damage or corrosion, and ensuring the wiper switch is functioning correctly.
4. Can I still drive my vehicle with OBDII code B3718?
- It is not recommended to drive your vehicle with this code as the front wipers are essential for visibility in various weather conditions.
5. How can I repair OBDII code B3718 (Front Wiper Relay Drive Circuit High)?
- Repair options include replacing the wiper relay, fixing any wiring issues, repairing or replacing the wiper motor, or addressing any problems with the wiper switch.
6. Are there any DIY tips for fixing OBDII code B3718?
- DIY tips include checking and cleaning the wiper relay connections, inspecting the fuse related to the wipers, and testing the wiper motor for proper function.
7. Can weather conditions affect OBDII code B3718?
- Extreme weather conditions, such as heavy rain or snow, can exacerbate issues related to this code by putting additional strain on the front wipers.
8. Is it common for OBDII code B3718 to recur after repairs?
- Recurrence of the code can happen if the root cause of the issue is not properly addressed during the initial repair.
9. Should I reset the OBDII code B3718 after making repairs?
- It is recommended to reset the code after making repairs to see if the issue has been successfully resolved and to prevent any potential confusion in the future.
10. Can a professional mechanic help with diagnosing and repairing OBDII code B3718?
- Yes, a professional mechanic with experience in automotive electrical systems can efficiently diagnose and repair issues related to OBDII code B3718.
Discuss the causes and fixes for B3718 OBDII Code
Code B3718 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.