AutoCodesBuick – B310D Buick

B310D Buick Code - Keyless Entry Transmitter 6 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
B310D Buick indicates Keyless Entry Transmitter 6 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.
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Code Popularity 610
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 B310D 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 B310D Buick - Keyless Entry Transmitter 6 Battery - AutoCodes.com
B310D Buick Code - Keyless Entry Transmitter 6 Battery

What are the Possible Causes of the DTC B310D Buick?

  • Low Keyless Entry Transmitter Battery
  • Faulty Keyless Entry Transmitter

How to Fix the DTC B310D 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 B310D 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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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 B310D Buick Code

1. What does the OBDII code B310D mean on a Buick?

The B310D code indicates an issue with the battery in the sixth keyless entry transmitter, such as low voltage or failure.

2. What are common symptoms of the B310D code?

Symptoms include reduced range or unresponsiveness of keyless entry transmitter 6, and possibly a warning light or message on the dashboard.

3. What causes the B310D code on a Buick?

The primary cause is a weak or dead battery in the sixth keyless entry transmitter. Other causes may include damaged transmitter circuitry or interference.

4. How can I fix the B310D code on my Buick?

Replace the battery in the sixth keyless entry transmitter with a compatible one. If the issue persists, replace the transmitter or visit a dealership for further diagnosis.

5. How do I know which transmitter is number 6?

Check your owner's manual or consult your dealership, as the numbering of transmitters may vary depending on the vehicle’s programming.

6. Can I clear the B310D code without fixing the issue?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue with the transmitter battery is not resolved.

7. What type of battery do I need to replace a keyless entry transmitter battery?

Most Buick keyless entry transmitters use a CR2032 or CR2025 coin cell battery, but consult your owner’s manual to confirm the correct type.

8. Can interference cause the B310D code to appear?

Yes, strong electromagnetic interference or being near devices like cell towers can occasionally disrupt the transmitter signal, though this is less common.

9. Do I need to reprogram the transmitter after replacing the battery?

In most cases, replacing the battery does not require reprogramming. However, if the transmitter still doesn’t work, reprogramming may be necessary.

10. Should I replace all transmitter batteries if one triggers the B310D code?

It’s not required, but replacing all transmitter batteries at the same time ensures consistent performance and avoids future issues.

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