AutoCodes – RAM – B16D0 RAM

B16D0 RAM Code - Left DRL Lamp Control Circuit Low

Quick Answer

The Body Control Module (BCM) monitors the Left Daytime Running Lights (DRL) Lamp. Common causes include Faulty Left Front Headlamp Assembly, Left Front Headlamp Assembly harness is open or shorted, Left 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
B16D0 RAM indicates Left DRL Lamp Control Circuit Low.
Common causes
Common causes include Faulty Left Front Headlamp Assembly, Left Front Headlamp Assembly harness is open or shorted, Left 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 732
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 23, 2019
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Code B16D0 RAM Description

The Body Control Module (BCM) monitors the Left Daytime Running Lights (DRL) Lamp. The BCM sets the OBDII code when the Left DRL Lamp is not to factory specifications.
OBDII Code B16D0 RAM - Left DRL Lamp Control Circuit Low - AutoCodes.com
B16D0 RAM Code - Left DRL Lamp Control Circuit Low

What are the Possible Causes of the DTC B16D0 RAM?

  • Faulty Left Front Headlamp Assembly
  • Left Front Headlamp Assembly harness is open or shorted
  • Left Front Headlamp Assembly circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B16D0 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 B16D0 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.

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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 B16D0 RAM Code

1. What does the OBDII code B16D0 mean?

The B16D0 code indicates a low voltage issue in the Left Daytime Running Light (DRL) Lamp Control Circuit on a RAM vehicle.

2. What are the common symptoms of the B16D0 code?

Symptoms include the left DRL not functioning, dim or flickering light, and possibly a dashboard warning light.

3. What causes the B16D0 code to appear?

Common causes include a faulty left DRL bulb, damaged wiring, a poor ground connection, or a malfunctioning DRL control module.

4. Can I drive with the B16D0 code active?

Yes, but the left DRL may not function properly, reducing vehicle visibility during the day.

5. How do I diagnose the B16D0 code?

Check the left DRL bulb, inspect the wiring and connectors for damage, and test the DRL control module for proper operation.

6. What tools are needed to fix the B16D0 code?

You may need a multimeter, a scan tool, replacement bulbs, and basic hand tools for wiring inspection and repair.

7. How much does it cost to repair the B16D0 code?

The cost depends on the issue but typically ranges from $20 for a bulb replacement to $200+ if the DRL control module needs replacing.

8. Can a blown fuse cause the B16D0 code?

Yes, a blown fuse in the DRL circuit can cause low voltage and trigger the code.

9. How do I reset the B16D0 code after fixing it?

Use an OBDII scan tool to clear the code. If the issue is resolved, the code should not return.

10. What happens if I ignore the B16D0 code?

Ignoring the code may result in decreased daytime visibility, posing a safety risk, and could lead to further electrical issues.

Discuss the causes and fixes for B16D0 RAM OBDII Code

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