B2338 RAM Code - Horn Control Circuit Open
Quick Answer
The Front Control Module (FCM) monitors the Horn Control Circuit. Common causes include Faulty Horn Fuse, Faulty Horn Relay, Horn Relay harness is open or shorted. 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
- B2338 RAM indicates Horn Control Circuit Open.
- Common causes
- Common causes include Faulty Horn Fuse, Faulty Horn Relay, Horn Relay harness is open or shorted.
- 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.
Code B2338 RAM Description
What are the Possible Causes of the DTC B2338 RAM?
- Faulty Horn Fuse
- 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 B2338 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2338 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 B2338 RAM code?
Need more information on how to fix the B2338 RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2338 RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B2338 RAM Code
1. What does the OBDII code B2338 RAM mean?
The code B2338 RAM indicates an open circuit in the horn control circuit, meaning the vehicle's horn system is not functioning properly due to a wiring or electrical issue.
2. What are the common symptoms of the B2338 code?
The most common symptom is that the horn does not work when pressed. Additionally, you may see the check engine light or a related warning on the dashboard.
3. What causes the B2338 code to appear?
This code is typically caused by a broken or disconnected wire in the horn control circuit, a faulty horn relay, a damaged horn switch, or corrosion in the circuit connections.
4. Can a blown fuse trigger the B2338 code?
Yes, a blown horn fuse can cause an open circuit and trigger the B2338 code. Inspect the fuse box for any blown fuses related to the horn system.
5. How can I diagnose the B2338 code?
Start by checking the horn fuse and relay, inspecting the wiring for damage or disconnection, and testing the horn switch for proper functionality using a multimeter.
6. Is it safe to drive with the B2338 code?
Yes, it's generally safe to drive, but you won't have a working horn, which is an important safety feature for alerting other drivers in emergencies.
7. How do I fix the B2338 RAM code?
Repair steps may include replacing a blown fuse, repairing damaged wiring, cleaning corroded connections, or replacing the faulty horn relay or switch.
8. Can a faulty clock spring cause the B2338 code?
Yes, a damaged clock spring in the steering wheel can interrupt the horn circuit and trigger this code, as it connects the horn switch to the electrical system.
9. How much does it cost to repair the B2338 code?
The cost varies depending on the issue, but replacing a fuse or relay is inexpensive, while repairing wiring or replacing the horn switch or clock spring can be more costly, ranging from $50 to $300 or more.
10. Can I clear the B2338 code without fixing the issue?
Clearing the code with an OBDII scanner will temporarily remove it, but the code will return if the underlying issue isn’t resolved.
Discuss the causes and fixes for B2338 RAM OBDII Code
Code B2338 RAM comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
