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Engine-Codes – Generic – B3119

B3119 Code - Keyless Entry Antenna 1

Quick Answer

The B3119 code indicates a problem with the Keyless Entry Antenna 1 in the vehicle. Common causes include Faulty keyless entry antenna, Wiring or connection issues, Water damage to the antenna. 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 keyless entry antenna, Wiring or connection issues, Water damage to the antenna.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code B3119 Description

The B3119 code indicates a problem with the Keyless Entry Antenna 1 in the vehicle. The keyless entry system allows drivers to unlock and lock their vehicles without using a key, providing convenience and security. The antenna is a crucial part of this system as it receives signals from the key fob and communicates with the vehicle's control module to perform the desired actions.

OBDII Code B3119 - Keyless Entry Antenna 1
B3119 Code - Keyless Entry Antenna 1

Common Causes of B3119

  1. Faulty keyless entry antenna
  2. Wiring or connection issues
  3. Water damage to the antenna
  4. Electrical system malfunction
  5. Key fob battery is low or dead

Symptoms of B3119

  1. Key fob not working properly
  2. Difficulty in unlocking or locking the vehicle using the keyless entry system
  3. Inconsistent response from the keyless entry system
  4. Alarm system not functioning correctly
  5. Remote start feature not working

How to Fix B3119

  1. Diagnose the issue by checking the keyless entry antenna and associated wiring for any visible damage.
  2. Test the key fob battery to ensure it is functioning properly.
  3. Replace the keyless entry antenna if it is found to be faulty.
  4. Repair any damaged wiring or connections.
  5. Reset the keyless entry system and reprogram the key fob if necessary.

Cost to Fix B3119

The typical repair costs for addressing a Keyless Entry Antenna 1 issue can range from $100 to $300, depending on the extent of the problem and the cost of parts. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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Code B3119 Information for Specific Makes

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.

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