AutoCodes – Generic – B3119

B3119 Code - Keyless Entry Antenna 1

Quick Answer

The driver door handle antenna is located in the driver door handle assembly and is used to establish low frequency communications with the keyless entry transmitter. Common causes include Faulty Handle Assembly Driver Exterior, Handle Assembly Driver Exterior harness is open or shorted, Handle Assembly Driver Exterior circuit poor electrical connection. 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: B3119 indicates Keyless Entry Antenna 1.
Common causes: Common causes include Faulty Handle Assembly Driver Exterior, Handle Assembly Driver Exterior harness is open or shorted, Handle Assembly Driver Exterior circuit poor electrical connection.
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 4,014

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 Mar 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3119 Description

The driver door handle antenna is located in the driver door handle assembly and is used to establish low frequency communications with the keyless entry transmitter. As a vehicle with locked doors is approached with a keyless entry transmitter and the exterior door handle button is pressed, the Keyless Entry Control Module communicates with the driver door handle keyless entry antenna. The Diagnostic Trouble Code (DTC) sets when the exterior driver door handle button is pressed within 15 min of last door closing.

OBDII Code B3119 - Keyless Entry Antenna 1 - AutoCodes.com — B3119 Code - Keyless Entry Antenna 1

What does this mean?

What are the Possible Causes of the DTC B3119?

Faulty Handle Assembly Driver Exterior
Handle Assembly Driver Exterior harness is open or shorted
Handle Assembly Driver Exterior circuit poor electrical connection
Faulty Keyless Entry Control Module

How to Fix the DTC B3119?

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 B3119 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 B3119 code?

Need more information on how to fix the B3119 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3119 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3119 Buick — Keyless Entry Antenna 1
B3119 Cadillac — Keyless Entry Antenna 1
B3119 Chevrolet — Keyless Entry Antenna 1
B3119 GMC — Keyless Entry Antenna 1

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 B3119 Code

1. What does OBDII code B3119 mean?

B3119 indicates an issue with Keyless Entry Antenna 1, which is responsible for receiving signals from the key fob for the keyless entry system.

2. What are the common symptoms of code B3119?

Symptoms include the inability to lock or unlock doors using the key fob, reduced range for keyless entry, or intermittent functionality of the keyless entry system.

3. What causes the B3119 code to appear?

The code can be triggered by a faulty keyless entry antenna, damaged wiring or connectors, a malfunctioning key fob, or interference from external electronic devices.

4. How do I diagnose a B3119 code?

Start by checking the keyless entry antenna and its wiring for damage or disconnections. Use a diagnostic scanner to confirm the code and test the antenna's operation.

5. Can a weak key fob battery cause the B3119 code?

While a weak key fob battery can cause keyless entry issues, it usually does not trigger the B3119 code. However, replacing the battery is a good first step in troubleshooting.

6. How can I fix the B3119 code?

Repairs may include replacing the faulty keyless entry antenna, repairing damaged wiring or connectors, or reprogramming the system if necessary.

7. Is it safe to drive with a B3119 code?

Yes, the B3119 code does not affect the drivability of the vehicle, but it may result in inconvenience due to limited keyless entry functionality.

8. Can interference from other devices cause the B3119 code?

Yes, strong electronic interference from nearby devices can disrupt the keyless entry system and potentially trigger the code.

9. How much does it cost to repair OBDII code B3119?

The cost varies depending on the issue, but replacing a keyless entry antenna typically costs between $100 and $300, including parts and labor.

10. Do I need to reprogram the key fob after fixing a B3119 code?

In some cases, reprogramming may be required if the system was reset or a new antenna was installed. Consult your vehicle's manual or a professional technician.