AutoCodes – Generic – B16D7

B16D7 Code - Left Tail Lamp 1 Control Circuit

Quick Answer

The Body Control Module (BCM) receives the input from the headlamp switch requesting park lamp illumination. Common causes include Faulty Left Rear Park Lamp, Left Rear Park Lamp harness is open or shorted, Left Rear Park Lamp 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: B16D7 indicates Left Tail Lamp 1 Control Circuit.
Common causes: Common causes include Faulty Left Rear Park Lamp, Left Rear Park Lamp harness is open or shorted, Left Rear Park Lamp 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 4,261

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B16D7 Description

The Body Control Module (BCM) receives the input from the headlamp switch requesting park lamp illumination. The BCM provides a voltage output through the left rear park lamp control circuit. The control circuit connects to the Park Lamps. A ground path for the lamps is present through the harness to the body sheet metal. For additional information on the Park Lamps operation. When the Body Control Module (BCM) detects a low condition on the Left Rear Park Lamp Driver circuit sets the Diagnostic Trouble Code (DTC).

OBDII Code B16D7 - Left Tail Lamp 1 Control Circuit - AutoCodes.com — B16D7 Code - Left Tail Lamp 1 Control Circuit

What does this mean?

What are the Possible Causes of the DTC B16D7?

Faulty Left Rear Park Lamp
Left Rear Park Lamp harness is open or shorted
Left Rear Park Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B16D7?

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

B16D7-11 LEFT TAILLAMP 1 CONTROL CIRCUIT SHORT TO GROUND
B16D7-15 LEFT TAILLAMP 1 CONTROL CIRCUIT SHORT TO BATTERY OR OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B16D7 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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Information for Specific Makes

B16D7 Chrysler — Left Tail Lamp 1 Control Circuit
B16D7 Dodge — Left Tail Lamp 1 Control Circuit
B16D7 Jeep — Left Tail Lamp 1 Control Circuit
B16D7 RAM — Left Tail Lamp 1 Control Circuit

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 B16D7 Code

1. What are the common symptoms of OBDII code B16D7 - Left Tail Lamp 1 Control Circuit?

- The common symptoms include the left tail lamp not functioning properly, dim or flickering light, or the lamp staying on constantly.

2. What can cause the OBDII code B16D7 to trigger?

- The code B16D7 may be triggered by a faulty tail lamp bulb, a damaged wiring harness, a loose connection, or a malfunctioning control module.

3. How can I diagnose the cause of the OBDII code B16D7?

- You can start by visually inspecting the left tail lamp for any issues, checking the bulb, inspecting the wiring for damage, and using a multimeter to test the connections.

4. Is it safe to continue driving with the OBDII code B16D7 active?

- It is recommended to address the issue promptly to ensure proper functioning of the left tail lamp for safety reasons and to avoid potential citations for non-working lights.

5. Can I reset the OBDII code B16D7 by simply clearing the fault codes?

- Clearing the fault codes may temporarily turn off the warning light, but if the underlying issue causing the B16D7 code is not fixed, the code is likely to reappear.

6. How do I repair the Left Tail Lamp 1 Control Circuit issue related to OBDII code B16D7?

- Depending on the cause, you may need to replace the tail lamp bulb, repair or replace damaged wiring, secure loose connections, or replace a faulty control module.

7. Are there any specific tools required to troubleshoot the OBDII code B16D7?

- Basic tools such as a multimeter, screwdrivers, and possibly a wiring diagram for your vehicle may be helpful in diagnosing and repairing the issue.

8. Can weather conditions affect the activation of the OBDII code B16D7?

- Extreme weather conditions can sometimes cause electrical issues, so it's possible for weather-related factors to contribute to the activation of the B16D7 code.

9. How can I prevent the recurrence of the OBDII code B16D7 in the future?

- Regularly inspecting and maintaining your vehicle's lighting system, checking for loose connections, and promptly addressing any lighting issues can help prevent the code from reoccurring.

10. Is it necessary to visit a mechanic for the repair of the OBDII code B16D7, or can I fix it myself?

- Depending on your level of experience and comfort with automotive repairs, you may be able to address the B16D7 code yourself by following diagnostic steps and making the necessary repairs.