B16D4 RAM Code - Right DRL Lamp Control Circuit Low
Quick Answer
The Body Control Module (BCM) monitors the Right Daytime Running Lights (DRL) Lamp. Common causes include Faulty Right Front Headlamp Assembly, Right Front Headlamp Assembly harness is open or shorted, Right Front Headlamp Assembly 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
- B16D4 RAM indicates Right DRL Lamp Control Circuit Low.
- Common causes
- Common causes include Faulty Right Front Headlamp Assembly, Right Front Headlamp Assembly harness is open or shorted, Right Front Headlamp Assembly 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.
Code B16D4 RAM Description
What are the Possible Causes of the DTC B16D4 RAM?
- Faulty Right Front Headlamp Assembly
- Right Front Headlamp Assembly harness is open or shorted
- Right Front Headlamp Assembly circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B16D4 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 B16D4 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 B16D4 RAM code?
Need more information on how to fix the B16D4 RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B16D4 RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B16D4 RAM Code
1. What does the OBDII code B16D4 mean?
The B16D4 code indicates a fault in the Right Daytime Running Lamp (DRL) Control Circuit, specifically a low voltage condition.
2. What are the symptoms of the B16D4 code?
Symptoms include the right daytime running lamp not functioning, a warning light on the dashboard, or a message indicating a lighting issue.
3. What causes the B16D4 code?
Common causes include a faulty right DRL bulb, damaged wiring, a corroded or loose connector, or a malfunctioning DRL control module.
4. Can I still drive with the B16D4 code active?
Yes, you can drive, but the right daytime running light will not function, which may reduce visibility and safety during daylight hours.
5. How do I diagnose the B16D4 code?
Start by inspecting the right DRL bulb, checking for loose or damaged wires, testing the DRL circuit for proper voltage, and scanning for additional codes.
6. How can I fix the B16D4 code?
Possible fixes include replacing the right DRL bulb, repairing or replacing damaged wiring, cleaning connections, or replacing a faulty DRL control module.
7. How much does it cost to repair the B16D4 code?
Repair costs can range from $20 for a replacement bulb to $200 or more if wiring repairs or module replacements are necessary.
8. Can a blown fuse cause the B16D4 code?
Yes, a blown fuse in the DRL circuit can cause a low voltage condition and trigger this code.
9. Will resetting the code fix the issue?
Resetting the code without addressing the underlying issue will not resolve the problem, and the code is likely to return.
10. Is the B16D4 code specific to RAM vehicles?
While the code is commonly associated with RAM vehicles, it may also appear in other makes and models with similar DRL systems.
Discuss the causes and fixes for B16D4 RAM OBDII Code
Code B16D4 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.
