AutoCodes – Generic – B2A28

B2A28 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 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.

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Code Popularity 1,023

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 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2A28 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 - Right Front Turn Lamp Circuit Short To Ground - AutoCodes.com — B2A28 Code - Right Front Turn Lamp Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B2A28?

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?

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 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 code?

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

Need Help with the Code?

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Information for Specific Makes

B2A28 Ford — Right Front Turn Lamp Circuit Short To Ground
B2A28 Lincoln — Right Front Turn Lamp Circuit Short To Ground
B2A28 Mercury — Right Front Turn Lamp Circuit Short To Ground

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 Code

What does the OBDII code B2A28 indicate?

B2A28 indicates a short circuit to ground in the right front turn lamp circuit, meaning there is an electrical issue affecting the turn signal's operation.

What are common symptoms of the B2A28 code?

Common symptoms include a non-functioning right front turn signal, rapid blinking of the turn signal indicator on the dashboard, and potential blown fuses related to the turn lamp circuit.

What are the potential causes of the B2A28 code?

Potential causes include damaged wiring or connectors, a faulty turn signal bulb, or issues with the vehicle's body control module affecting the turn lamp circuit.

How can I diagnose the B2A28 code?

To diagnose B2A28, visually inspect the wiring and connectors for damage, test the turn signal bulb for proper operation, and use a multimeter to check for continuity in the circuit.

What should I do if I find damaged wiring related to the B2A28 code?

If you find damaged wiring, repair or replace the affected sections of the wiring harness, ensuring all connections are secure and properly insulated to prevent future shorts.

Can a blown fuse trigger the B2A28 code?

Yes, a blown fuse in the turn lamp circuit can trigger the B2A28 code, so check the fuses and replace any that are blown before further diagnosing other components.

Is it safe to drive with the B2A28 code present?

While it's generally not unsafe to drive, you should avoid using the right front turn signal until the issue is resolved, as it can pose a safety hazard for signaling other drivers.

What tools do I need to repair the B2A28 code?

You will need basic automotive tools such as a multimeter for testing electrical circuits, wire strippers, connectors, and potentially a soldering iron if you need to repair wiring.

Should I reset the code after making repairs?

Yes, after repairing the issue that triggered the B2A28 code, reset the code using an OBDII scanner and monitor the system to ensure the problem does not return.