AutoCodes – Generic – B2107

B2107 Code - Front Wiper Motor Relay Circuit Short To Battery

Quick Answer

The Body Control Module (BCM) monitors the Front Wiper Motor Relay. Common causes include Faulty Front Wiper Motor Relay, Front Wiper Motor Relay harness is open or shorted, Front Wiper Motor 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: B2107 indicates Front Wiper Motor Relay Circuit Short To Battery.
Common causes: Common causes include Faulty Front Wiper Motor Relay, Front Wiper Motor Relay harness is open or shorted, Front Wiper Motor 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 6,305

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 Sep 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2107 Description

The Body Control Module (BCM) monitors the Front Wiper Motor Relay. The BCM sets the OBDII code when the Front Wiper Motor Relay is not to factory specifications.

OBDII Code B2107 - Front Wiper Motor Relay Circuit Short To Battery - AutoCodes.com — B2107 Code - Front Wiper Motor Relay Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B2107?

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

How to Fix the DTC B2107?

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 B2107 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 B2107 code?

Need more information on how to fix the B2107 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2107 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2107 Buick — Power Seat Switch Shorted
B2107 Cadillac — Power Seat Switch Shorted
B2107 Chevrolet — Power Seat Switch Shorted
B2107 Chrysler — Ignition Switch Sense Input Circuit Performance
B2107 Dodge — Ignition Switch Sense Input Circuit Performance
B2107 GMC — Power Seat Switch Shorted
B2107 Jeep — Ignition Switch Sense Input Circuit Performance
B2107 RAM — Ignition Switch Sense Input Circuit Performance

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 B2107 Code

1. What does OBDII code B2107 mean?

Code B2107 indicates a short to the battery in the front wiper motor relay circuit, causing improper operation of the wiper system.

2. What are the symptoms of code B2107?

Common symptoms include wipers that wonâ€™t turn off, wipers running at incorrect speeds, or the wiper system not functioning at all.

3. What causes code B2107 to appear?

This code is usually caused by damaged wiring, a faulty front wiper motor relay, a short circuit, or a malfunctioning wiper motor.

4. Can I still drive my car with code B2107?

Yes, but a malfunctioning wiper system can be dangerous in poor weather conditions, so itâ€™s best to address the issue promptly.

5. How can I diagnose code B2107?

Inspect the wiring and connectors in the wiper motor relay circuit for damage or corrosion. Test the relay and wiper motor for proper function.

6. How do I fix code B2107?

Repairs may involve replacing damaged wires, cleaning corroded connections, or replacing a faulty wiper motor relay or wiper motor.

7. How much does it cost to fix code B2107?

Repair costs vary but may range from $50 to $200, depending on whether wiring repairs or part replacements are needed.

8. Can a blown fuse cause code B2107?

No, a blown fuse would interrupt power, while this code specifically refers to a short to the battery in the circuit.

9. Will disconnecting the battery clear code B2107?

Disconnecting the battery may temporarily clear the code, but the underlying issue must be fixed to prevent the code from returning.

10. Do I need a professional to fix code B2107?

If youâ€™re comfortable with electrical diagnostics and repairs, you may be able to fix it yourself. Otherwise, a professional mechanic is recommended.