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Engine-Codes – Generic – B116B

B116B Code - Left Power Running Board Motor Short

Quick Answer

The B116B code indicates a problem with the left power running board motor, specifically a short circuit. Common causes include Damaged wiring leading to a short circuit in the power running board motor, Water intrusion causing corrosion and electrical issues in the motor, Internal motor failure due to wear and tear. 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
B116B indicates Left Power Running Board Motor Short.
Common causes
Common causes include Damaged wiring leading to a short circuit in the power running board motor, Water intrusion causing corrosion and electrical issues in the motor, Internal motor failure due to wear and tear.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code B116B Description

The B116B code indicates a problem with the left power running board motor, specifically a short circuit. Power running boards are a convenient feature found on many modern vehicles that automatically deploy when the door is opened to assist passengers in entering and exiting the vehicle. The motor controls the movement of the running board, and a short circuit in this motor can lead to issues with its operation.

OBDII Code B116B - Left Power Running Board Motor Short
B116B Code - Left Power Running Board Motor Short

Common Causes of B116B

  1. Damaged wiring leading to a short circuit in the power running board motor.
  2. Water intrusion causing corrosion and electrical issues in the motor.
  3. Internal motor failure due to wear and tear.
  4. Faulty control module sending incorrect signals to the motor.
  5. Defective sensors detecting incorrect positions of the running board.

Symptoms of B116B

  1. Power running board fails to deploy or retract properly.
  2. Unusual noises coming from the power running board motor.
  3. Running board gets stuck in one position.
  4. Warning light illuminated on the dashboard indicating a fault with the running board system.

How to Fix B116B

  1. Begin by disconnecting the vehicle's battery to prevent any electrical accidents.
  2. Inspect the wiring harness connected to the left power running board motor for any visible damage or signs of wear.
  3. Test the motor's functionality using a multimeter to determine if it is shorted or faulty.
  4. Replace the power running board motor if a short circuit is detected, ensuring to follow manufacturer guidelines for installation.
  5. Clear the diagnostic trouble codes with a scan tool and test the power running board to ensure proper operation.

Cost to Fix B116B

The typical repair costs for addressing a left power running board motor short can range from $200 to $500, including parts and labor. However, it is essential to note that specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may offer lower rates. It is recommended to inquire about local rates to obtain a more accurate estimate for this repair.

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Code B116B Information for Specific Makes

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 B116B Code

1. What are the common symptoms of OBDII code B116B (Left Power Running Board Motor Short)?

The common symptoms include the left power running board failing to deploy or retract properly, unusual noises coming from the motor, and a warning light illuminated on the dashboard.

2. What are the potential causes of OBDII code B116B (Left Power Running Board Motor Short)?

The code can be triggered by a short circuit in the wiring harness, a faulty power running board motor, or a malfunctioning control module.

3. How can I diagnose OBDII code B116B (Left Power Running Board Motor Short)?

Diagnosis typically involves inspecting the wiring for any visible damage, testing the power running board motor for proper operation, and using a scan tool to check for fault codes in the control module.

4. Can I continue to drive my vehicle with OBDII code B116B (Left Power Running Board Motor Short)?

It is not recommended to drive the vehicle with this code unresolved as it may result in further damage to the power running board system or pose a safety risk if the running board fails to deploy properly.

5. How can I repair OBDII code B116B (Left Power Running Board Motor Short)?

Repair options include repairing or replacing damaged wiring, replacing the power running board motor if necessary, and reprogramming or replacing the control module as needed.

6. Are there any DIY tips for resolving OBDII code B116B (Left Power Running Board Motor Short)?

While some basic troubleshooting steps can be performed by DIY enthusiasts, it is recommended to consult a professional mechanic for accurate diagnosis and repair to ensure the issue is resolved correctly.

7. How much does it typically cost to repair OBDII code B116B (Left Power Running Board Motor Short)?

The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Can OBDII code B116B (Left Power Running Board Motor Short) be prevented?

Regular maintenance, such as checking the condition of the wiring harness and keeping the power running board system clean and well-lubricated, can help prevent issues that may trigger this code.

9. Is OBDII code B116B (Left Power Running Board Motor Short) a common problem in certain vehicle models?

This code may be more common in vehicles equipped with power running boards, especially in older models or vehicles that have been exposed to harsh environmental conditions.

10. How soon should I address OBDII code B116B (Left Power Running Board Motor Short) once detected?

It is recommended to address the issue promptly to prevent any further damage to the power running board system and ensure the safe operation of the vehicle.

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