AutoCodes – Generic – B2A39

B2A39 Code - Puddle Lamp Output Circuit Open

Quick Answer

The Smart Junction Box (SJB) monitors the Puddle Lamp Output Circuit. Common causes include Faulty Puddle Lamp, Puddle Lamp harness is open or shorted, Puddle Lamp 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: B2A39 indicates Puddle Lamp Output Circuit Open.
Common causes: Common causes include Faulty Puddle Lamp, Puddle Lamp harness is open or shorted, Puddle Lamp 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 1,579

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
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Code B2A39 Description

The Smart Junction Box (SJB) monitors the Puddle Lamp Output Circuit. The SJB sets the OBDII code when the Puddle Lamp Output Circuit is not to factory specifications.

OBDII Code B2A39 - Puddle Lamp Output Circuit Open - AutoCodes.com — B2A39 Code - Puddle Lamp Output Circuit Open

What does this mean?

What are the Possible Causes of the DTC B2A39?

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

How to Fix the DTC B2A39?

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 B2A39 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 B2A39 code?

Need more information on how to fix the B2A39 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2A39 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2A39 Ford — Puddle Lamp Output Circuit Open
B2A39 Lincoln — Puddle Lamp Output Circuit Open
B2A39 Mercury — Puddle Lamp Output Circuit Open

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 B2A39 Code

1. What are the common symptoms of OBDII code B2A39 (Puddle Lamp Output Circuit Open)?

The common symptoms include the puddle lamp not illuminating when the door is opened or unlocked, or a warning light on the dashboard indicating a lighting system issue.

2. What can cause the Puddle Lamp Output Circuit Open error code B2A39?

Potential causes include a faulty puddle lamp, damaged wiring or connectors in the circuit, a blown fuse, or a malfunctioning control module.

3. How can I diagnose the Puddle Lamp Output Circuit Open issue related to code B2A39?

You can start by visually inspecting the puddle lamp, checking the wiring and connectors for any damage, testing the fuse related to the circuit, and using a diagnostic scanner to analyze the control module.

4. Can I repair the Puddle Lamp Output Circuit Open problem myself?

Depending on your skills and experience with automotive electrical systems, you may be able to replace a faulty puddle lamp, repair damaged wiring, or replace a blown fuse. However, complex issues with the control module may require professional help.

5. Is it safe to drive with the OBDII code B2A39 triggered?

Driving with this code triggered should not pose a safety risk, but you may miss the convenience and safety benefits of having a functional puddle lamp, especially in dark or rainy conditions.

6. How much does it typically cost to repair the Puddle Lamp Output Circuit Open issue?

The cost of repairing this issue can vary widely depending on the root cause. Simple fixes like replacing a bulb or fuse may cost less than diagnosing and repairing a wiring or control module issue. It's best to get a professional diagnosis for an accurate estimate.

7. Will resetting the OBDII code B2A39 make the problem go away permanently?

Simply resetting the code without addressing the underlying issue will not fix the problem permanently. It's crucial to diagnose and repair the root cause to prevent the code from reappearing.

8. Can extreme weather conditions cause the Puddle Lamp Output Circuit Open error code B2A39?

Yes, extreme weather conditions like heavy rain, snow, or extreme temperatures can potentially damage the wiring or components in the puddle lamp circuit, leading to this error code.

9. Is the Puddle Lamp Output Circuit Open error code a common issue in certain car models?

This error code can be more common in vehicles that have integrated puddle lamps in the side mirrors or doors, but it can occur in any vehicle with this feature if there are issues with the circuit.

10. How long does it usually take to repair the Puddle Lamp Output Circuit Open problem?

The repair time can vary based on the complexity of the issue. Simple fixes like replacing a bulb can be done quickly, while diagnosing and repairing wiring or control module problems may take longer and require professional assistance.