AutoCodesChrysler – B2337 Chrysler

B2337 Chrysler 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 Chrysler 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 1,865
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 12, 2019
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Code B2337 Chrysler 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 Chrysler - Horn Control Circuit High - AutoCodes.com
B2337 Chrysler Code - Horn Control Circuit High

What are the Possible Causes of the DTC B2337 Chrysler?

  • 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 Chrysler?

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 Chrysler 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 Chrysler Code

1. What does the OBDII code B2337 mean on a Chrysler vehicle?

The B2337 code indicates a problem in the horn control circuit, specifically that the circuit is operating at a voltage higher than expected.

2. What are the common symptoms of a B2337 code on a Chrysler?

Common symptoms include the horn not functioning, the horn sounding continuously, or the check engine light or other warning lights being illuminated.

3. What causes the B2337 Horn Control Circuit High code to appear?

This code is typically caused by a short circuit, a damaged horn relay, a faulty horn switch, or a wiring issue such as a broken or corroded connection.

4. Can a bad horn relay trigger the B2337 code?

Yes, a faulty horn relay can cause high voltage in the horn control circuit, leading to the B2337 code.

5. How do you diagnose a B2337 code on a Chrysler?

Start by inspecting the horn wiring and connectors for damage or corrosion. Test the horn relay and horn switch with a multimeter to check for proper function.

6. Is it safe to drive with a B2337 code on a Chrysler?

While the vehicle may drive normally, the horn may not work, which is a safety concern as it could prevent you from warning other drivers in an emergency.

7. How do you fix the B2337 code on a Chrysler?

Repairs may include replacing the horn relay, repairing damaged wiring or connectors, or replacing a faulty horn switch.

8. Can a blown fuse cause the B2337 code?

A blown fuse is unlikely to cause the B2337 code since this code relates to high voltage, but it’s still worth checking the fuse as part of the diagnosis.

9. Will clearing the B2337 code fix the problem?

Clearing the code may temporarily reset the warning, but the underlying issue in the horn control circuit must be repaired to prevent the code from returning.

10. How much does it cost to repair a B2337 code on a Chrysler?

The repair cost will vary depending on the exact cause but typically ranges from $50 to $200 for parts and labor, depending on whether you need to replace the relay, switch, or wiring.

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