AutoCodes – Jeep – B2337 Jeep

B2337 Jeep Code - Horn Control Circuit High

Quick Answer

The Front Control Module (FCM) monitors the Horn Control Circuit. Common causes include Faulty Horn Relay, Horn Relay harness is open or shorted, Horn 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: B2337 Jeep indicates Horn Control Circuit High.
Common causes: Common causes include Faulty Horn Relay, Horn Relay harness is open or shorted, Horn 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 1,195

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 B2337 Jeep Description

The Front Control Module (FCM) monitors the Horn Control Circuit. When the Front Control Module detects excessive current on the Horn Relay Control circuit the B2337 Diagnostic Trouble Code (DTC) will set.

OBDII Code B2337 Jeep - Horn Control Circuit High - AutoCodes.com — B2337 Jeep Code - Horn Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B2337 Jeep?

Faulty Horn Relay
Horn Relay harness is open or shorted
Horn Relay circuit poor electrical connection
Faulty Front Control Module (FCM)

How to Fix the DTC B2337 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 B2337 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 B2337 Jeep code?

Need more information on how to fix the B2337 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2337 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 B2337 Jeep Code

1. What are the common symptoms of OBDII code B2337 Jeep (Horn Control Circuit High)?

- The common symptoms include the horn not working, the horn honking unexpectedly, and the horn sounding continuously.

2. What are the possible causes of OBDII code B2337 Jeep (Horn Control Circuit High)?

- The possible causes may include a faulty horn switch, a short circuit in the horn wiring, a malfunctioning horn relay, or a problem in the horn itself.

3. How can I diagnose the issue related to OBDII code B2337 Jeep?

- To diagnose the issue, you can start by checking the horn fuse, testing the horn relay, inspecting the horn wiring for any visible damage, and testing the horn switch for continuity.

4. What is the repair procedure for OBDII code B2337 Jeep (Horn Control Circuit High)?

- The repair procedure may involve replacing a faulty horn switch, repairing any damaged wiring, replacing the horn relay if necessary, or replacing the horn itself if it is found to be defective.

5. Can OBDII code B2337 Jeep (Horn Control Circuit High) cause any other issues in the vehicle?

- While the code itself may not directly cause any other issues, it is important to address the problem promptly as a non-functioning horn can impact your safety on the road.

6. Is it safe to continue driving with the OBDII code B2337 Jeep (Horn Control Circuit High) unresolved?

- It is not recommended to drive with the issue unresolved, as the horn is an important safety feature that alerts other drivers and pedestrians of your presence on the road.

7. How can I reset the OBDII code B2337 Jeep (Horn Control Circuit High) after making repairs?

- You can reset the code by using an OBDII scanner to clear the error codes stored in the vehicle's computer system after the repairs have been completed.

8. Are there any DIY tips for troubleshooting OBDII code B2337 Jeep (Horn Control Circuit High)?

- DIY tips include checking the horn fuse, inspecting the horn wiring for damage, testing the horn relay, and ensuring the horn switch is functioning properly.

9. Will disconnecting the battery reset the OBDII code B2337 Jeep (Horn Control Circuit High)?

- Disconnecting the battery may temporarily clear the code, but it is recommended to properly diagnose and repair the underlying issue to prevent the code from reoccurring.

10. How long does it typically take to repair OBDII code B2337 Jeep (Horn Control Circuit High)?

- The repair time can vary depending on the specific cause of the issue, but diagnosing and fixing the problem may take anywhere from 30 minutes to a few hours.