AutoCodes – Buick – B3112 Buick

B3112 Buick 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 Buick 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 689
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 Buick 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 Buick - Keyless Entry Transmitter 4 Battery - AutoCodes.com
B3112 Buick Code - Keyless Entry Transmitter 4 Battery

What are the Possible Causes of the DTC B3112 Buick?

  • Low Keyless Entry Transmitter Battery
  • Faulty Keyless Entry Transmitter

How to Fix the DTC B3112 Buick?

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 Buick 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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Need Help with the Code?

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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 B3112 Buick Code

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

The common symptoms include a malfunctioning keyless entry system, the key fob not working, or the inability to remotely unlock or lock the vehicle.

2. What are the possible causes of OBDII code B3112 in a Buick related to the Keyless Entry Transmitter 4 Battery?

Possible causes include a weak or dead battery in the key fob, a faulty key fob transmitter, or issues with the keyless entry system module.

3. How can I diagnose the issue causing OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery?

You can start by replacing the battery in the key fob. If the issue persists, you may need to have the key fob reprogrammed or have the keyless entry system module checked by a professional.

4. Can I repair OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery myself?

If the issue is simply a dead key fob battery, you can replace it yourself. However, if the problem lies with the key fob transmitter or the keyless entry system module, it's best to consult a professional for repair.

5. Is it safe to continue driving my Buick with OBDII code B3112 related to the Keyless Entry Transmitter 4 Battery?

While it may be safe to drive, it is inconvenient to not have a working keyless entry system. It's recommended to address the issue promptly to ensure the security and convenience of your vehicle.

6. Will resetting the OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery solve the problem?

Resetting the code may temporarily clear the error message, but if the underlying issue such as a faulty key fob or keyless entry system remains unresolved, the problem is likely to reoccur.

7. How do I know if the key fob is the problem causing OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery?

You can try using a spare key fob if available to see if the issue persists. If the spare key fob works fine, then the original key fob may need repair or replacement.

8. Can extreme weather conditions affect the performance of the keyless entry system and trigger OBDII code B3112 in my Buick?

Yes, extreme temperatures can impact the battery life of the key fob and affect the performance of the keyless entry system, leading to issues like OBDII code B3112.

9. How much does it typically cost to repair OBDII code B3112 in a Buick related to the Keyless Entry Transmitter 4 Battery?

The cost of repair can vary depending on the exact cause of the issue. Replacing a key fob battery is relatively inexpensive, while repairing or replacing a keyless entry system module can be more costly.

10. Can a dealership or an automotive locksmith help me resolve OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery?

Yes, both a dealership and an automotive locksmith have the tools and expertise to diagnose and repair issues related to the keyless entry system and key fobs, including OBDII code B3112.

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