AutoCodes – Jeep – B16D4 Jeep

B16D4 Jeep 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 Jeep 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.

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Code Popularity 2,590

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 Jun 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B16D4 Jeep Description

The Body Control Module (BCM) monitors the Right Daytime Running Lights (DRL) Lamp. The BCM sets the OBDII code when the Right DRL Lamp is not to factory specifications.

OBDII Code B16D4 Jeep - Right DRL Lamp Control Circuit Low - AutoCodes.com — B16D4 Jeep Code - Right DRL Lamp Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B16D4 Jeep?

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 Jeep?

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 Jeep 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 Jeep code?

Need more information on how to fix the B16D4 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B16D4 Jeep 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 B16D4 Jeep Code

1. What are the common symptoms of OBDII code B16D4 in a Jeep related to the Right DRL Lamp Control Circuit Low?

The common symptoms include the right daytime running light (DRL) not functioning properly or staying dim, flickering, or not turning on at all.

2. What are the possible causes of the Right DRL Lamp Control Circuit Low code B16D4 in a Jeep?

Possible causes can include a faulty DRL bulb, damaged wiring or connectors, a defective DRL module, or issues with the vehicle's body control module.

3. How can I diagnose the cause of the Right DRL Lamp Control Circuit Low code B16D4 in my Jeep?

You can start by visually inspecting the DRL bulb, wiring, and connectors for any visible damage. Using a multimeter, you can also test the voltage at various points in the circuit to pinpoint the issue.

4. Can I still drive my Jeep with the OBDII code B16D4 related to the Right DRL Lamp Control Circuit Low?

It is generally safe to drive your Jeep with this code, but it's important to address the underlying issue promptly to ensure proper visibility and safety on the road, especially in low-light conditions.

5. How can I repair the Right DRL Lamp Control Circuit Low code B16D4 in my Jeep?

Repair options may include replacing the faulty DRL bulb, repairing damaged wiring or connectors, replacing the DRL module, or reprogramming the body control module if necessary.

6. Are there any DIY tips for troubleshooting the Right DRL Lamp Control Circuit Low code B16D4 in my Jeep?

You can start by checking and cleaning the DRL bulb contacts, inspecting the wiring for any abrasions or breaks, and resetting the body control module to see if the issue resolves.

7. Will resetting the OBDII code B16D4 related to the Right DRL Lamp Control Circuit Low make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear after driving the vehicle for a certain distance or time.

8. Is it necessary to visit a dealership or mechanic to fix the OBDII code B16D4 for the Right DRL Lamp Control Circuit Low?

While you can attempt some basic troubleshooting yourself, visiting a dealership or qualified mechanic is recommended for more complex issues or if you are unsure about diagnosing and repairing the problem.

9. Can extreme weather conditions affect the Right DRL Lamp Control Circuit and trigger the B16D4 code in a Jeep?

Yes, extreme weather conditions such as excessive heat or moisture can potentially damage the DRL components or create electrical issues that may trigger the B16D4 code.

10. How much can I expect to pay to repair the OBDII code B16D4 related to the Right DRL Lamp Control Circuit Low in my Jeep?

The cost of repair can vary depending on the exact cause of the issue, parts needed, and labor rates. It is advisable to get a diagnostic assessment from a mechanic to determine the total repair cost accurately.