AutoCodes – Mercury – B2A28 Mercury

B2A28 Mercury Code - Right Front Turn Lamp Circuit Short To Ground

Quick Answer

When the Smart Junction Box (SJB) detects the multifunction switch is in the LH (Left) TURN position, the SJB provides voltage to the LH front turn lamp. Common causes include Faulty Bulb Holder, Bulb Holder harness is open or shorted, Bulb Holder 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: B2A28 Mercury indicates Right Front Turn Lamp Circuit Short To Ground.
Common causes: Common causes include Faulty Bulb Holder, Bulb Holder harness is open or shorted, Bulb Holder 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 610

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 Feb 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2A28 Mercury Description

When the Smart Junction Box (SJB) detects the multifunction switch is in the LH (Left) TURN position, the SJB provides voltage to the LH front turn lamp. When the SJB detects the multifunction switch is in the RH (Right) TURN position, the SJB provides voltage to the RH front turn lamp. The rear turn lamps are controlled utilizing the rear stoplamp circuitry. The Diagnostic Trouble Code (DTC) sets when the SJB detects a short to ground from the RH front turn lamp voltage supply circuit.

OBDII Code B2A28 Mercury - Right Front Turn Lamp Circuit Short To Ground - AutoCodes.com — B2A28 Mercury Code - Right Front Turn Lamp Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B2A28 Mercury?

Faulty Bulb Holder
Bulb Holder harness is open or shorted
Bulb Holder circuit poor electrical connection
Faulty Smart Junction Box (SJB)

How to Fix the DTC B2A28 Mercury?

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 B2A28 Mercury 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 B2A28 Mercury code?

Need more information on how to fix the B2A28 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2A28 Mercury code diagnosed by a professional: Find a repair shop in your area

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 B2A28 Mercury Code

1. What does the OBDII code B2A28 mean for a Mercury vehicle?

The code B2A28 indicates a "Right Front Turn Lamp Circuit Short To Ground," meaning there is an electrical issue causing the circuit to improperly connect to the ground.

2. What are the common symptoms of the B2A28 code?

Typical symptoms include the right front turn signal not working, a rapid or irregular turn signal flash, and possibly a warning light or message on the dashboard.

3. What causes the B2A28 code to appear?

This code is usually caused by damaged wiring, a faulty bulb socket, a shorted turn signal bulb, or corrosion in the circuit.

4. Can I still drive my Mercury with the B2A28 code?

While the vehicle may still be drivable, it is unsafe to operate without a functional turn signal. This issue should be addressed promptly to ensure proper signaling.

5. How do I diagnose the B2A28 code?

Start by visually inspecting the right front turn signal bulb, socket, and surrounding wiring for damage or corrosion. Use a multimeter to check for continuity and a short to ground in the circuit.

6. How can I fix the B2A28 code?

Repairs may include replacing a damaged bulb, repairing or replacing faulty wiring, cleaning corroded connectors, or replacing a defective socket.

7. How much does it cost to fix the B2A28 code?

Repair costs can vary depending on the issue, but minor fixes like replacing a bulb or repairing wiring may cost $50 to $150. More extensive electrical repairs could cost more.

8. Can a faulty turn signal switch cause the B2A28 code?

Although it's less common, a malfunctioning turn signal switch could potentially cause circuit issues and trigger the code.

9. Will clearing the B2A28 code without fixing the problem solve the issue?

No, clearing the code will only temporarily remove it from the system. The underlying issue must be repaired to prevent the code from returning.

10. Can corrosion in the connector cause a short to ground?

Yes, corrosion can create a conductive path to ground, leading to a short and triggering the B2A28 code. Cleaning or replacing the affected connectors is necessary.