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Engine-Codes – RAM – B2337 RAM

B2337 RAM Code - Horn Control Circuit High

Quick Answer

The B2337 diagnostic trouble code (DTC) refers to a problem in the horn control circuit where the voltage is detected to be higher than normal. Common causes include Faulty horn switch on the steering wheel, Short circuit in the horn wiring, Corrosion or loose connections in the horn circuit. 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 switch on the steering wheel, Short circuit in the horn wiring, Corrosion or loose connections in the horn circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code B2337 RAM Description

The B2337 diagnostic trouble code (DTC) refers to a problem in the horn control circuit where the voltage is detected to be higher than normal. This issue can affect the vehicle's horn functionality, potentially leading to the horn not working at all or sounding continuously without the driver's input. The horn control circuit is responsible for transmitting the signal from the horn button on the steering wheel to the horn itself, allowing the driver to alert others of their presence on the road.

OBDII Code B2337 RAM - Horn Control Circuit High
B2337 RAM Code - Horn Control Circuit High

Common Causes of B2337 RAM

  1. Faulty horn switch on the steering wheel.
  2. Short circuit in the horn wiring.
  3. Corrosion or loose connections in the horn circuit.
  4. Defective horn relay.
  5. Issues with the horn itself, such as a broken diaphragm.

Symptoms of B2337 RAM

  1. Horn not working at all.
  2. Horn sounding continuously without driver input.
  3. Horn sounding weak or muffled.
  4. Horn only working intermittently.
  5. Illumination of the horn symbol on the dashboard.

How to Fix B2337 RAM

  1. Begin by inspecting the horn switch on the steering wheel for any visible damage or wear. Replace the switch if necessary.
  2. Check the horn wiring for any signs of a short circuit, corrosion, or loose connections. Repair or replace the wiring as needed.
  3. Test the horn relay to ensure it is functioning correctly. Replace the relay if it is found to be faulty.
  4. If the above steps do not resolve the issue, inspect the horn itself for any defects and replace it if necessary.
  5. Finally, clear the DTC from the vehicle's memory using a diagnostic scanner to reset the system and ensure the horn control circuit is functioning properly.

Cost to Fix B2337 RAM

The typical repair costs for addressing a B2337 DTC can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $100 and $300 for parts and labor to resolve this problem. However, it's important to note that diagnostic time and labor rates at auto repair shops can fluctuate based on factors such as location, vehicle make and model, and engine type. It's recommended to contact local auto repair shops for a more accurate estimate based on your specific circumstances.

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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.

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