AutoCodes – Generic – B16B0

B16B0 Code - Left Stop Lamp Control Circuit Low

Quick Answer

The Body Control Module (BCM) receives a hardwired brake signal from the Anti-lock Brake System (ABS) module indicating that the Brake Pedal is applied. Common causes include Faulty Left Stop Lamp, Left Stop Lamp harness is open or shorted, Left Stop 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: B16B0 indicates Left Stop Lamp Control Circuit Low.
Common causes: Common causes include Faulty Left Stop Lamp, Left Stop Lamp harness is open or shorted, Left Stop 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 622

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 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B16B0 Description

The Body Control Module (BCM) receives a hardwired brake signal from the Anti-lock Brake System (ABS) module indicating that the Brake Pedal is applied. When this signal is received, the BCM provides a voltage output through the rear stop signal control circuit. For additional information on the Brake Lamp operation. When the Body Control Module (BCM) detects a low or high condition on the Left Stop Lamp Driver circuit and sets the Diagnostic Trouble Code (DTC).

OBDII Code B16B0 - Left Stop Lamp Control Circuit Low - AutoCodes.com — B16B0 Code - Left Stop Lamp Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B16B0?

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

How to Fix the DTC B16B0?

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 B16B0 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 B16B0 code?

Need more information on how to fix the B16B0 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

B16B0 Chrysler — Left Stop Lamp Control Circuit Low
B16B0 Dodge — Left Stop Lamp Control Circuit Low
B16B0 Jeep — Left Stop Lamp Control Circuit Low
B16B0 RAM — Left Stop Lamp Control Circuit Low

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 B16B0 Code

1. What are the common symptoms of OBDII code B16B0 (Left Stop Lamp Control Circuit Low)?

- The common symptoms include the left stop lamp not illuminating when the brake pedal is pressed, the brake light staying on constantly, or a warning light on the dashboard.

2. What are the possible causes of OBDII code B16B0?

- The code B16B0 can be caused by issues such as a faulty stop lamp bulb, damaged wiring or connectors in the left stop lamp circuit, a defective stop lamp switch, or a problem with the body control module.

3. How can I diagnose the cause of OBDII code B16B0?

- To diagnose the cause of B16B0, you can start by checking the left stop lamp bulb, inspecting the wiring and connectors for damage, testing the stop lamp switch for functionality, and using an OBDII scanner to read the fault codes.

4. What are some repair tips for fixing OBDII code B16B0?

- Repair tips for B16B0 include replacing the faulty stop lamp bulb, repairing any damaged wiring or connectors, adjusting or replacing the stop lamp switch if necessary, or reprogramming the body control module.

5. Can I drive my vehicle with OBDII code B16B0 active?

- It is not recommended to drive your vehicle with OBDII code B16B0 active, as it indicates a potential issue with the left stop lamp circuit, which can compromise your safety on the road.

6. How do I reset OBDII code B16B0 after making repairs?

- After making the necessary repairs to fix OBDII code B16B0, you can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the fault code.

7. Is it necessary to visit a mechanic for OBDII code B16B0 repairs?

- While some simple repairs like replacing a stop lamp bulb can be done by yourself, it is recommended to visit a mechanic for proper diagnosis and repair of complex issues related to OBDII code B16B0.

8. Can weather conditions affect the triggering of OBDII code B16B0?

- Yes, extreme weather conditions or water ingress into the left stop lamp circuit can sometimes trigger OBDII code B16B0 by causing electrical shorts or damage to components.

9. How can I prevent OBDII code B16B0 from occurring in the future?

- To prevent OBDII code B16B0, you can regularly inspect and maintain the stop lamp bulbs, wiring, and connectors, avoid water exposure to the electrical components, and address any brake light issues promptly.

10. Will OBDII code B16B0 cause my vehicle to fail an emissions test?

- OBDII code B16B0 is related to the left stop lamp circuit and is not directly related to emissions, so it should not cause your vehicle to fail an emissions test.