AutoCodes – Chevrolet – B3109 2016 Chevrolet Silverado

B3109 2016 Chevrolet Silverado Code - Keyless Entry Transmitter 1 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: B3109 2016 Chevrolet Silverado indicates Keyless Entry Transmitter 1 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 262

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
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Code B3109 2016 Chevrolet Silverado 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 B3109 2016 Chevrolet Silverado - Keyless Entry Transmitter 1 Battery - AutoCodes.com — B3109 2016 Chevrolet Silverado Code - Keyless Entry Transmitter 1 Battery

What does this mean?

What are the Possible Causes of the DTC B3109 2016 Chevrolet Silverado?

Low Keyless Entry Transmitter Battery
Faulty Keyless Entry Transmitter

How to Fix the DTC B3109 2016 Chevrolet Silverado?

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 B3109 2016 Chevrolet Silverado 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 B3109 2016 Chevrolet Silverado code?

Need more information on how to fix the B3109 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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 B3109 2016 Chevrolet Silverado Code

1. What does the OBDII code B3109 mean on a 2016 Chevrolet Silverado?

The code B3109 refers to an issue with the battery in Keyless Entry Transmitter 1, indicating that the key fob battery may be low or malfunctioning.

2. What are common symptoms of code B3109 in a 2016 Chevrolet Silverado?

Common symptoms include difficulty unlocking or locking the vehicle remotely, intermittent operation of the key fob, or the vehicle failing to detect the fob during ignition.

3. What causes the B3109 code to appear?

The most common cause is a depleted or weak battery in Keyless Entry Transmitter 1. Other causes may include internal damage to the key fob or interference with its signal.

4. How do I fix the B3109 code on my 2016 Chevrolet Silverado?

Replace the battery in Keyless Entry Transmitter 1. If the issue persists, inspect the fob for damage or have the fob reprogrammed by a professional.

5. How can I replace the battery in the key fob for a 2016 Chevrolet Silverado?

Open the fob casing using a small tool, remove the old battery, and replace it with a new one of the same type (usually CR2032). Ensure proper polarity and reassemble the fob.

6. Can the B3109 code affect the ability to start the vehicle?

Yes, if the vehicle cannot detect Keyless Entry Transmitter 1 due to a weak battery or malfunction, it may prevent the push-button start system from functioning.

7. Does the B3109 code require professional repair?

In most cases, replacing the key fob battery resolves the issue. If the code persists, professional diagnosis may be needed to check for fob damage or programming errors.

8. How can I prevent the B3109 code from occurring again?

Regularly check and replace the key fob battery when it starts to weaken. Avoid exposing the key fob to moisture or physical damage.

9. Is it safe to drive with the B3109 code active?

Yes, but you may experience intermittent functionality with the key fob, which could inconvenience locking, unlocking, or starting the vehicle.

10. What type of battery does the 2016 Chevrolet Silverado key fob use?

The key fob typically uses a CR2032 lithium coin battery, but you should confirm the specific type by checking your owner's manual or the existing battery.