AutoCodes – Generic – B310D

B310D 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 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,229

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B310D 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 - Keyless Entry Transmitter 6 Battery - AutoCodes.com — B310D Code - Keyless Entry Transmitter 6 Battery

What does this mean?

What are the Possible Causes of the DTC B310D?

Low Keyless Entry Transmitter Battery
Faulty Keyless Entry Transmitter

How to Fix the DTC B310D?

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 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 B310D code?

Need more information on how to fix the B310D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B310D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B310D Buick — Keyless Entry Transmitter 6 Battery
B310D Cadillac — Keyless Entry Transmitter 6 Battery
B310D Chevrolet — Keyless Entry Transmitter 6 Battery
B310D GMC — Keyless Entry Transmitter 6 Battery

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 Code

1. What does the OBDII code B310D mean?

The B310D code indicates an issue with the battery in Keyless Entry Transmitter 6, suggesting it may be low, depleted, or malfunctioning.

2. What are the common symptoms of a B310D code?

Symptoms include difficulty unlocking or locking doors remotely, failure of the keyless entry system, or intermittent key fob functionality.

3. What causes the B310D code to appear?

Common causes include a dead or weak key fob battery, poor battery contact, or a malfunction in the keyless entry transmitter.

4. How can I fix the B310D code?

Replace the key fob battery with a new one, ensuring it is installed correctly. If the issue persists, inspect for damage or consider reprogramming the transmitter.

5. What type of battery does a keyless entry transmitter typically use?

Most keyless entry transmitters use small coin cell batteries, such as CR2032 or CR2025, but you should check your vehicleâ€™s owner manual for the exact type.

6. Do I need to reprogram the key fob after replacing the battery?

In most cases, reprogramming is not necessary after replacing the battery, but consult your vehicleâ€™s manual if the fob still doesnâ€™t work.

7. Can a low key fob battery trigger other warning lights or codes?

While itâ€™s uncommon, a low key fob battery might cause other related codes or warnings if the vehicle misinterprets the signal.

8. How can I test the battery in my keyless entry transmitter?

Use a multimeter to check the voltage of the battery. A healthy coin cell battery typically has around 3 volts.

9. What should I do if replacing the battery doesnâ€™t clear the B310D code?

If the issue persists, inspect the keyless entry transmitter for damage or have it tested by a professional. You may also need to check for receiver or wiring issues.

10. Can extreme temperatures affect the key fob battery and cause a B310D code?

Yes, extreme heat or cold can reduce battery performance and potentially trigger the B310D code if the transmitter cannot function properly.