B3708 Buick Code - Front Washer Motor Input High
Quick Answer
The Body Control Module (BCM) monitors the windshield washer pump control circuit. Common causes include Faulty Front Washer Motor, Front Washer Motor harness is open or shorted, Front Washer Motor 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
- B3708 Buick indicates Front Washer Motor Input High.
- Common causes
- Common causes include Faulty Front Washer Motor, Front Washer Motor harness is open or shorted, Front Washer Motor 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.
Code B3708 Buick Description
Battery voltage for the windshield washer pump is supplied through the FRT WIPER 25 A fuse and windshield wiper washer switch. Grounding for the windshield washer pump is through the OFF position of the rear washer switch, when equipped. The Diagnostic Trouble Code (DTC) sets when the front windshield washer pump control circuit is shorted to battery voltage for 2 minutes.
What are the Possible Causes of the DTC B3708 Buick?
- Faulty Front Washer Motor
- Front Washer Motor harness is open or shorted
- Front Washer Motor circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3708 Buick?
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 B3708 Buick 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 B3708 Buick code?
Need more information on how to fix the B3708 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3708 Buick code diagnosed by a professional: Find a repair shop in your area
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.
Discuss the causes and fixes for B3708 Buick OBDII Code
Code B3708 Buick 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.
