AutoCodes – RAM – B2337 RAM

B2337 RAM 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 RAM 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 716

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 RAM 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 RAM - Horn Control Circuit High - AutoCodes.com — B2337 RAM Code - Horn Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B2337 RAM?

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 RAM?

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 RAM 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.

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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 RAM Code

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

- The common symptoms include a non-functioning horn, a horn that goes off randomly, or a horn that stays continuously on.

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

- The code may be caused by a faulty horn switch, a short circuit in the horn wiring, a malfunctioning horn relay, or a problem with the horn itself.

3. How can I diagnose the OBDII code B2337 RAM (Horn Control Circuit High)?

- To diagnose this code, you can start by checking the horn fuse, inspecting the horn wiring for any visible damage, testing the horn relay, and testing the horn switch for proper functionality.

4. What are some repair tips for fixing OBDII code B2337 RAM (Horn Control Circuit High)?

- Some repair tips include replacing a faulty horn switch, repairing any damaged wiring, replacing a malfunctioning horn relay, or replacing the horn itself if necessary.

5. Can I still drive my vehicle with OBDII code B2337 RAM (Horn Control Circuit High)?

- It is generally safe to drive the vehicle with this code, but you should address the issue promptly to ensure the horn functions correctly in case of emergencies.

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

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

7. How much does it cost to repair OBDII code B2337 RAM (Horn Control Circuit High)?

- The cost of repair can vary depending on the specific cause of the code, but it may range from a simple DIY fix to a professional repair costing anywhere from $50 to $200 or more.

8. Can extreme weather conditions trigger OBDII code B2337 RAM (Horn Control Circuit High)?

- Extreme weather conditions such as heavy rain or extreme heat can potentially cause electrical issues that may trigger this code, so it's important to ensure all components are properly sealed and protected.

9. Is OBDII code B2337 RAM (Horn Control Circuit High) a serious issue?

- While the code itself may not affect the drivability of the vehicle, having a non-functioning horn can compromise safety, especially in emergency situations. It is best to address the issue promptly.

10. Are there any recalls related to OBDII code B2337 RAM (Horn Control Circuit High)?

- There are no specific recalls related to this code, but it's always a good idea to check with the vehicle manufacturer or a trusted mechanic for any updates or relevant information.