AutoCodes – RAM – B2335 RAM

B2335 RAM Code - Horn Control Circuit Short

Quick Answer

The Body Control Module (BCM) receives the network communication message from the Steering Control Module indicating horn operation is requested. Common causes include Faulty Horn Control Relay, Horn Control Relay harness is open or shorted, Horn Control 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: B2335 RAM indicates Horn Control Circuit Short.
Common causes: Common causes include Faulty Horn Control Relay, Horn Control Relay harness is open or shorted, Horn Control 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,395

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 10, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2335 RAM Description

The Body Control Module (BCM) receives the network communication message from the Steering Control Module indicating horn operation is requested. The BCM provides a voltage output through the horn relay control circuit, which connects to the coil side of the Horn Relay.

OBDII Code B2335 RAM - Horn Control Circuit Short - AutoCodes.com — B2335 RAM Code - Horn Control Circuit Short

What does this mean?

What are the Possible Causes of the DTC B2335 RAM?

Faulty Horn Control Relay
Horn Control Relay harness is open or shorted
Horn Control Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2335 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 does this mean?

Code Tech Notes

B2335-11 HORN CONTROL CIRCUIT SHORT TO GROUND
B2335-15 HORN CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2335 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.

Need more information about the B2335 RAM code?

Need more information on how to fix the B2335 RAM code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2335 RAM code diagnosed by a professional: Find a repair shop in your area

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 B2335 RAM Code

1. What does the OBDII code B2335 mean for a RAM vehicle?

B2335 indicates a short circuit in the horn control circuit, meaning the system has detected an electrical issue that prevents the horn from functioning normally.

2. What are common symptoms of the B2335 code in a RAM?

Symptoms include the horn not working, the horn sounding unexpectedly, or the horn being stuck on.

3. What causes the B2335 code to appear on a RAM?

Common causes include damaged wiring, a short circuit in the horn control circuit, a faulty horn relay, or a defective horn switch.

4. Can I still drive my RAM with a B2335 code?

Yes, the vehicle is drivable, but the horn is a critical safety feature. It's important to address this issue promptly to ensure safe communication with other drivers.

5. How do I diagnose the B2335 code on my RAM?

Start by visually inspecting the horn wiring and connectors for damage or corrosion. Then, test the horn relay and switch using a multimeter to check for proper function.

6. How can I fix the B2335 code on a RAM?

Repairs may include replacing damaged wiring, repairing short circuits, replacing a faulty horn relay, or replacing the horn switch if it's defective.

7. How much does it cost to repair the B2335 code on a RAM?

Repair costs can vary but may range from $50 to $200 depending on whether wiring repairs, a new relay, or a horn switch replacement is required.

8. Can a blown fuse cause the B2335 code on a RAM?

A blown fuse itself does not cause the code but could indicate an underlying short circuit in the horn control circuit that needs to be addressed.

9. Will clearing the B2335 code fix the issue in my RAM?

Clearing the code without addressing the root cause will not fix the issue. The code will likely return until the underlying problem is resolved.

10. What tools are needed to troubleshoot the B2335 code on a RAM?

Basic tools include a multimeter for testing electrical circuits, a wiring diagram for the horn system, and potentially a scan tool to clear the code after repairs.