AutoCodes – GMC – B3112 GMC

B3112 GMC Code - Keyless Entry Transmitter 4 Battery

Quick Answer

With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the Remote Control Door Lock Receiver (RCDLR), along with the commanded keyless entry function. Common causes include Low Keyless Entry Transmitter Battery, Faulty Keyless Entry Transmitter. 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 GMC indicates Keyless Entry Transmitter 4 Battery.
Common causes
Common causes include Low Keyless Entry Transmitter Battery, Faulty Keyless Entry Transmitter.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 803
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 11, 2023
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Code B3112 GMC Description

With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the Remote Control Door Lock Receiver (RCDLR), along with the commanded keyless entry function. The Remote Control Door Lock Receiver sends this to the Body Control Module (BCM) to perform the requested function. The Diagnostic Trouble Code (DTC) sets when three consecutive low-battery signals are received from the same transmitter.
OBDII Code B3112 GMC - Keyless Entry Transmitter 4 Battery - AutoCodes.com
B3112 GMC Code - Keyless Entry Transmitter 4 Battery

What are the Possible Causes of the DTC B3112 GMC?

  • Low Keyless Entry Transmitter Battery
  • Faulty Keyless Entry Transmitter

How to Fix the DTC B3112 GMC?

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 B3112 GMC 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 B3112 GMC code?

Need more information on how to fix the B3112 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3112 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 GMC Code

1. What are the common symptoms of OBDII code B3112 GMC related to the Keyless Entry Transmitter 4 Battery?

The common symptoms include the key fob not working, the remote keyless entry system malfunctioning, and the vehicle's doors not responding to remote locking/unlocking commands.

2. What causes the OBDII code B3112 GMC related to the Keyless Entry Transmitter 4 Battery?

This code is typically triggered by a low or dead battery in the fourth key fob transmitter, which causes a loss of communication between the transmitter and the vehicle's receiver.

3. How can I diagnose the issue behind OBDII code B3112 GMC for Keyless Entry Transmitter 4 Battery?

You can start by checking the battery level of the fourth key fob transmitter using a battery tester, replacing the battery if necessary, and reprogramming the transmitter to the vehicle.

4. Can a malfunctioning Keyless Entry Transmitter 4 Battery cause other issues in the vehicle?

Yes, a malfunctioning key fob transmitter can lead to other problems such as difficulty in accessing the vehicle, security system issues, and inconvenience in operating the remote keyless entry system.

5. Is it possible to reset the OBDII code B3112 GMC without replacing the key fob transmitter battery?

In some cases, simply replacing the battery in the fourth key fob transmitter and reprogramming it to the vehicle can reset the code and resolve the issue without the need for further repairs.

6. How long does it take to replace the battery in the Keyless Entry Transmitter 4 for a GMC vehicle?

Replacing the battery in the key fob transmitter is a quick and simple task that typically takes only a few minutes to complete, depending on the type of key fob and the availability of a replacement battery.

7. Are there any aftermarket solutions available for fixing OBDII code B3112 GMC related to the Keyless Entry Transmitter 4 Battery?

Yes, there are aftermarket key fob batteries and replacement key fobs available in the market that can be used as alternatives to the original equipment from GMC for resolving this issue.

8. Can a DIY enthusiast perform the repairs for OBDII code B3112 GMC on their own?

Yes, replacing the battery in the key fob transmitter and reprogramming it to the vehicle can be done by DIY enthusiasts with basic automotive knowledge and the right tools to complete the task.

9. What are the potential risks of ignoring the OBDII code B3112 GMC for Keyless Entry Transmitter 4 Battery?

Ignoring this code can lead to further key fob transmitter failures, complete loss of remote keyless entry functionality, and potential security concerns related to accessing and securing the vehicle.

10. Is it necessary to visit a dealership for repairs related to OBDII code B3112 GMC on a GMC vehicle?

While visiting a dealership is an option, you can also address the issue by replacing the key fob transmitter battery and reprogramming it yourself or seeking assistance from an independent automotive repair shop specializing in keyless entry systems.

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