AutoCodes – Generic – B237F

B237F Code - Horn Mute Request Circuit High

Quick Answer

The Multi-Purpose Module (Police And Taxi Interface Module-PTIM) monitors the Horn Mute Request Circuit. Common causes include Faulty Horn Mute, Horn Mute harness is open or shorted, Horn Mute 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: B237F indicates Horn Mute Request Circuit High.
Common causes: Common causes include Faulty Horn Mute, Horn Mute harness is open or shorted, Horn Mute 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 481

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 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B237F Description

The Multi-Purpose Module (Police And Taxi Interface Module-PTIM) monitors the Horn Mute Request Circuit. The Diagnostic Trouble Code (DTC) sets when the Multi-Purpose Module (Police And Taxi Interface Module-PTIM) has detected the Horn Mute Signal circuit above a calibrated value.

OBDII Code B237F - Horn Mute Request Circuit High - AutoCodes.com — B237F Code - Horn Mute Request Circuit High

What does this mean?

What are the Possible Causes of the DTC B237F?

Faulty Horn Mute
Horn Mute harness is open or shorted
Horn Mute circuit poor electrical connection
Faulty Multi-Purpose Module (Police And Taxi Interface Module-PTIM)

How to Fix the DTC B237F?

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 B237F 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 B237F code?

Need more information on how to fix the B237F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B237F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B237F Chrysler — Horn Mute Request Circuit High
B237F Dodge — Horn Mute Request Circuit High
B237F Jeep — Horn Mute Request Circuit High
B237F RAM — Horn Mute Request Circuit High

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 Code

1. What are the common symptoms of OBDII code B237F (Horn Mute Request Circuit High)?

The common symptoms of code B237F include the horn not working, the horn sounding continuously, or the horn volume being very low.

2. What are the possible causes of OBDII code B237F?

Possible causes of code B237F may include a faulty horn switch, damaged wiring in the horn circuit, a defective horn relay, or a problem with the body control module.

3. How can I diagnose the OBDII code B237F in my vehicle?

Diagnosing code B237F involves checking the horn fuse, testing the horn relay, inspecting the horn switch, and using a multimeter to check the continuity and voltage in the horn circuit.

4. What are some repair tips for fixing OBDII code B237F?

Repair tips for resolving code B237F may include replacing the horn switch, repairing damaged wiring, replacing the horn relay, or recalibrating the body control module.

5. Can I drive my vehicle with OBDII code B237F active?

It is not recommended to drive your vehicle with code B237F active, as the horn is an essential safety feature that may be needed in emergency situations.

6. How much does it typically cost to repair OBDII code B237F?

The cost of repairing code B237F can vary depending on the underlying cause, but it may range from $100 to $300 for parts and labor.

7. Will resetting the OBDII system clear code B237F?

Resetting the OBDII system may temporarily clear code B237F, but if the underlying issue is not addressed, the code is likely to reappear.

8. Is OBDII code B237F a serious issue that requires immediate attention?

While code B237F may not directly affect the drivability of the vehicle, it is still important to address the underlying cause promptly to ensure the proper functioning of the horn.

9. Can extreme weather conditions cause OBDII code B237F to trigger?

Extreme weather conditions, such as heavy rain or extreme cold, can sometimes lead to moisture or corrosion in the horn circuit, potentially triggering code B237F.

10. Are there any preventive measures I can take to avoid OBDII code B237F in the future?

To prevent code B237F from occurring in the future, regularly inspect the horn circuit for any signs of wear or damage, and address any issues promptly to avoid potential malfunctions.