AutoCodes – RAM – B16B2 RAM

B16B2 RAM Code - Left Stop Lamp Control Circuit Open

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: B16B2 RAM indicates Left Stop Lamp Control Circuit Open.
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 972

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 B16B2 RAM 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 B16B2 RAM - Left Stop Lamp Control Circuit Open - AutoCodes.com — B16B2 RAM Code - Left Stop Lamp Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC B16B2 RAM?

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 B16B2 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 B16B2 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 B16B2 RAM Code

1. What are the common symptoms of OBDII code B16B2 RAM (Left Stop Lamp Control Circuit Open)?

- The common symptoms include the left stop lamp not illuminating when the brake pedal is pressed, the left turn signal not working, and the dashboard indicator showing a brake light warning.

2. What are the possible causes of the B16B2 RAM code?

- Possible causes include a faulty left stop lamp bulb, a damaged wiring harness, a defective stop lamp switch, or a problem with the body control module.

3. How can I diagnose the Left Stop Lamp Control Circuit Open issue?

- Start by visually inspecting the left stop lamp bulb and its wiring for any visible damage. Use a multimeter to test the continuity of the wiring and check for power at the stop lamp socket when the brake pedal is pressed.

4. Can a loose or corroded connector cause the B16B2 RAM code?

- Yes, a loose or corroded connector at the stop lamp socket or in the wiring harness can disrupt the circuit and trigger the B16B2 RAM code.

5. What is the recommended repair for the Left Stop Lamp Control Circuit Open problem?

- The recommended repair involves fixing or replacing any damaged wiring, ensuring proper grounding, replacing the faulty stop lamp bulb, and checking and resetting the body control module if necessary.

6. Is it safe to continue driving with the B16B2 RAM code illuminated?

- It is not recommended to drive with the B16B2 RAM code illuminated, as it indicates a potential issue with the left stop lamp, which compromises vehicle safety and can lead to accidents.

7. Can I clear the B16B2 RAM code with a basic OBDII scanner?

- Yes, you can clear the B16B2 RAM code using an OBDII scanner once you have addressed and resolved the underlying issue with the left stop lamp control circuit.

8. How do I prevent the B16B2 RAM code from reoccurring in the future?

- To prevent the B16B2 RAM code from reoccurring, regularly inspect the stop lamp bulbs, maintain proper electrical connections, and address any issues promptly to avoid circuit disruptions.

9. Will the B16B2 RAM code affect my vehicle's overall performance?

- The B16B2 RAM code is related to the left stop lamp control circuit and does not directly impact the vehicle's performance. However, it is crucial for safety and compliance reasons to address the issue promptly.

10. Can a professional mechanic help diagnose and repair the B16B2 RAM code?

- Yes, seeking assistance from a professional mechanic or automotive technician is recommended for diagnosing and repairing the B16B2 RAM code, especially if you are unsure about the electrical troubleshooting steps involved.