AutoCodes – Jeep – B2339 Jeep

B2339 Jeep Code - Horn Switch Stuck

Quick Answer

The Horn Switch is connected to the Right Steering Switch. Common causes include Faulty Horn Switch, Horn Switch harness is open or shorted, Horn Switch 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: B2339 Jeep indicates Horn Switch Stuck.
Common causes: Common causes include Faulty Horn Switch, Horn Switch harness is open or shorted, Horn Switch 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 4,895

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 Nov 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2339 Jeep Description

The Horn Switch is connected to the Right Steering Switch. The switching status is transferred to the Cluster by way of the LIN bus, a serial sub-bus. The Cluster converts the data to a CAN Bus signal and sends the message to the corresponding module on the bus. The Diagnostic Trouble Code (DTC) sets when the Cluster senses that the Horn Switch is pressed for greater than 45 seconds.

OBDII Code B2339 Jeep - Horn Switch Stuck - AutoCodes.com — B2339 Jeep Code - Horn Switch Stuck

What does this mean?

What are the Possible Causes of the DTC B2339 Jeep?

Faulty Horn Switch
Horn Switch harness is open or shorted
Horn Switch circuit poor electrical connection
Faulty Right Steering Switch

How to Fix the DTC B2339 Jeep?

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 B2339 Jeep 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 B2339 Jeep code?

Need more information on how to fix the B2339 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2339 Jeep 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 B2339 Jeep Code

1. What are the common symptoms of OBDII code B2339 in a Jeep related to the horn switch being stuck?

- The common symptoms include the horn continuously honking without driver input, or the horn not working at all.

2. What are the possible causes of the horn switch being stuck in a Jeep triggering OBDII code B2339?

- The possible causes can be a malfunctioning horn switch, damaged wiring or connections, or a faulty horn relay.

3. How can I diagnose the issue causing OBDII code B2339 related to the horn switch in my Jeep?

- You can start by inspecting the horn switch for physical damage, checking the wiring for any breaks or shorts, and testing the horn relay for proper functionality.

4. Can a DIY enthusiast repair the horn switch stuck issue causing OBDII code B2339 in a Jeep?

- Depending on the exact cause, DIY repairs may be possible, such as replacing the horn switch or repairing damaged wiring. However, complex electrical issues may require professional assistance.

5. Is it safe to continue driving my Jeep with the horn switch stuck issue causing OBDII code B2339?

- It is not recommended to drive the vehicle with the horn continuously honking, as it can be a safety hazard. If the horn is not working at all, it may not pose an immediate danger, but it's still best to address the issue promptly.

6. How much does it typically cost to repair the horn switch stuck issue triggering OBDII code B2339 in a Jeep?

- The cost of repair can vary depending on the exact cause of the issue. Simple fixes like replacing the horn switch may cost less than addressing complex wiring problems. It's advisable to consult a mechanic for an accurate estimate.

7. Can a faulty horn switch causing OBDII code B2339 impact other systems in my Jeep?

- While the primary impact of a faulty horn switch is on the horn system itself, electrical issues can sometimes affect other systems in the vehicle. It's best to address the problem promptly to prevent any potential complications.

8. Will resetting the OBDII code B2339 related to the horn switch stuck in my Jeep solve the underlying issue?

- Simply resetting the code may temporarily turn off the warning light, but it will not fix the root cause of the problem. It's important to diagnose and repair the issue causing the code to prevent further issues.

9. Are there any preventive measures to avoid the horn switch stuck issue triggering OBDII code B2339 in my Jeep?

- Regularly inspecting the horn system, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the horn switch from getting stuck and triggering the OBDII code.

10. How long does it typically take to repair the horn switch stuck issue causing OBDII code B2339 in a Jeep?

- The repair time can vary based on the complexity of the problem and the availability of parts. Simple fixes may take a few hours, while more intricate electrical repairs could require additional time.