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Engine-Codes – RAM – B237F RAM

B237F RAM Code - Horn Mute Request Circuit High

Quick Answer

The B237F diagnostic trouble code (DTC) refers to a Horn Mute Request Circuit High issue. Common causes include Faulty horn mute request switch, Damaged wiring or connectors in the horn mute circuit, Defective horn relay. 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
B237F RAM indicates Horn Mute Request Circuit High.
Common causes
Common causes include Faulty horn mute request switch, Damaged wiring or connectors in the horn mute circuit, Defective horn relay.
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 15, 2024
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Code B237F RAM Description

The B237F diagnostic trouble code (DTC) refers to a Horn Mute Request Circuit High issue. This code indicates that there is a problem with the circuit that controls the horn mute request signal in the vehicle. The horn mute request signal is used to temporarily disable the horn when certain conditions are met, such as when the vehicle is locked or the alarm is armed. When this circuit is not functioning properly, it can lead to the horn not muting when it should, which can be both annoying and potentially dangerous.

OBDII Code B237F RAM - Horn Mute Request Circuit High
B237F RAM Code - Horn Mute Request Circuit High

Common Causes of B237F RAM

  1. Faulty horn mute request switch.
  2. Damaged wiring or connectors in the horn mute circuit.
  3. Defective horn relay.
  4. Issues with the body control module (BCM).
  5. Water damage or corrosion in the horn system components.

Symptoms of B237F RAM

  1. Horn sounds unexpectedly.
  2. Horn does not mute when locking the vehicle.
  3. Horn mute feature does not work when arming the alarm.
  4. Warning light on the dashboard related to the horn system.

How to Fix B237F RAM

  1. Begin by conducting a visual inspection of the horn mute request circuit, checking for any visible damage to the wiring or connectors.
  2. Test the horn mute request switch for proper functionality using a multimeter.
  3. Inspect the horn relay and replace if necessary.
  4. Check the BCM for any fault codes related to the horn system and address them accordingly.
  5. Clear the DTC from the vehicle's computer system using a diagnostic scan tool after completing the repairs.

Cost to Fix B237F RAM

The typical repair costs for addressing a B237F 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. Keep in mind that rates at auto repair shops can fluctuate based on factors such as location, vehicle make and model, and the complexity of the repair. It is advisable to obtain quotes from multiple shops to ensure you are getting a fair price for the repair.

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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 B237F RAM Code

1. What does the OBDII code B237F RAM mean?

The code B237F RAM indicates a fault in the "Horn Mute Request Circuit," specifically that the circuit is reporting a high voltage condition.

2. What are common symptoms of the B237F code?

Symptoms may include the horn not functioning, the horn sounding unexpectedly, or the inability to mute the horn when intended.

3. What causes the B237F Horn Mute Request Circuit High code?

Common causes include a damaged horn relay, a short or open circuit in the wiring, a malfunctioning horn switch, or a faulty body control module (BCM).

4. Is the B237F code serious?

While it doesn't affect the drivability of the vehicle, it can compromise safety if the horn is non-functional or behaves erratically.

5. How can I diagnose the B237F code?

Start by inspecting the horn wiring and connectors for damage, check the horn relay and switch for functionality, and use a multimeter to test for proper voltage in the circuit.

6. Can a blown fuse cause the B237F code?

Yes, a blown horn fuse can contribute to this code, as it disrupts the circuit's normal operation.

7. How do I fix the B237F Horn Mute Request Circuit High issue?

Repairs may involve replacing the horn relay, repairing damaged wiring, replacing the horn switch, or reprogramming or replacing the BCM if necessary.

8. Can I clear the B237F code without repairs?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue isn’t resolved.

9. How much does it cost to fix the B237F code?

The cost depends on the specific issue, ranging from $20–$50 for a relay or fuse replacement to several hundred dollars if the BCM requires repair or replacement.

10. Can I drive my car with the B237F code active?

Yes, you can drive the car, but you should address the issue promptly to ensure the horn functions properly for safety purposes.

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