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Engine-Codes – Generic – B3112

B3112 Code - Keyless Entry Transmitter 4 Battery

Quick Answer

The B3112 diagnostic trouble code refers to an issue with the Keyless Entry Transmitter 4 Battery in the vehicle. Common causes include Depleted battery in the keyless entry transmitter, Faulty battery in the keyless entry transmitter, Corrosion on the battery terminals affecting battery connectivity. 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
B3112 indicates Keyless Entry Transmitter 4 Battery.
Common causes
Common causes include Depleted battery in the keyless entry transmitter, Faulty battery in the keyless entry transmitter, Corrosion on the battery terminals affecting battery connectivity.
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 B3112 Description

The B3112 diagnostic trouble code refers to an issue with the Keyless Entry Transmitter 4 Battery in the vehicle. This code indicates that there is a problem with the battery of the keyless entry transmitter, which is the remote control used to lock or unlock the vehicle's doors. The keyless entry transmitter sends a signal to the vehicle's receiver to perform these actions, and if the battery is low or not functioning properly, it can lead to issues with the keyless entry system.

OBDII Code B3112 - Keyless Entry Transmitter 4 Battery
B3112 Code - Keyless Entry Transmitter 4 Battery

Common Causes of B3112

  1. Depleted battery in the keyless entry transmitter.
  2. Faulty battery in the keyless entry transmitter.
  3. Corrosion on the battery terminals affecting battery connectivity.
  4. Damage to the keyless entry transmitter causing battery issues.

Symptoms of B3112

  1. Difficulty in locking or unlocking the doors using the keyless entry remote.
  2. Inconsistent operation of the keyless entry system.
  3. Complete failure of the keyless entry system.
  4. Warning light on the dashboard indicating an issue with the keyless entry system.

How to Fix B3112

  1. Replace the battery in the keyless entry transmitter with a new one.
  2. Clean the battery terminals to ensure proper connectivity.
  3. Check for any damage to the keyless entry transmitter and replace if necessary.
  4. Re-sync the keyless entry transmitter with the vehicle's receiver.
  5. Test the keyless entry system to ensure proper functionality after the repair.

Cost to Fix B3112

The typical repair costs for addressing the Keyless Entry Transmitter 4 Battery issue can vary depending on the specific vehicle make and model, as well as the location of the repair. On average, the cost of replacing the battery in the keyless entry transmitter can range from $20 to $50 for the battery itself. Labor costs for this repair can vary between $50 to $100, depending on the shop's hourly rates. It's advisable to check with local auto repair shops for a more precise estimate based on your vehicle's requirements.

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Code B3112 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 B3112 Code

1. What are the common symptoms of OBDII code B3112 (Keyless Entry Transmitter 4 Battery)?

- The common symptoms include the keyless entry transmitter not working, difficulty locking or unlocking the vehicle remotely, or receiving low battery warnings.

2. What are the possible causes of OBDII code B3112?

- The code B3112 typically indicates a low battery level in the keyless entry transmitter 4. This can be due to an actual low battery, a faulty transmitter, or a communication issue between the transmitter and the vehicle.

3. How can I troubleshoot OBDII code B3112 related to the keyless entry transmitter battery?

- Start by replacing the battery in the keyless entry transmitter with a new one. If the issue persists, try reprogramming the transmitter or checking for any loose connections or damaged components.

4. Can a weak car battery cause OBDII code B3112 to trigger?

- While a weak car battery may not directly trigger code B3112, it can lead to electrical issues that affect the keyless entry system. It's recommended to ensure the car battery is in good condition to prevent related problems.

5. Is it safe to continue using the vehicle with OBDII code B3112 present?

- It is generally safe to continue using the vehicle with the B3112 code related to the keyless entry transmitter battery. However, it's important to address the issue promptly to avoid potential inconvenience or failure of the keyless entry system.

6. How do I reset OBDII code B3112 after replacing the keyless entry transmitter battery?

- In most cases, the code B3112 will clear on its own after the new battery is installed and the keyless entry system is functioning properly. If the code persists, a scan tool can be used to clear the code manually.

7. Can moisture or water damage cause OBDII code B3112 to appear?

- Yes, moisture or water damage can potentially affect the keyless entry transmitter's battery and trigger code B3112. It's essential to keep the transmitter dry and protected from water to prevent such issues.

8. Are there any DIY repair tips for fixing OBDII code B3112 on my own?

- DIY repair tips may include replacing the keyless entry transmitter battery, cleaning any corroded contacts, ensuring a secure connection, and reprogramming the transmitter according to the vehicle's manual.

9. How often should I replace the battery in the keyless entry transmitter to prevent OBDII code B3112?

- It is recommended to replace the battery in the keyless entry transmitter as soon as you notice any symptoms of low battery or every 1-2 years as part of regular maintenance to prevent OBDII code B3112 from occurring.

10. Can a dealership or automotive technician help diagnose and repair OBDII code B3112 if I'm unable to resolve it myself?

- Yes, if you're unable to diagnose or repair OBDII code B3112 related to the keyless entry transmitter battery on your own, a dealership or automotive technician with the necessary tools and expertise can assist in resolving the issue efficiently.

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