AutoCodes – GMC – B3119 GMC

B3119 GMC 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 GMC 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 1,394

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

What does this mean?

What are the Possible Causes of the DTC B3119 GMC?

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 GMC?

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 GMC 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 B3119 GMC Code

1. What does the OBDII code B3119 on a GMC vehicle indicate?

The code B3119 indicates a fault in the Keyless Entry Antenna 1, suggesting an issue with the antenna system used for the vehicle's keyless entry feature.

2. What are common symptoms of the B3119 GMC code?

Symptoms include the keyless entry system not functioning properly or intermittently, increased difficulty in locking/unlocking the vehicle remotely, and possibly a warning light on the dashboard.

3. What causes the B3119 code to appear on a GMC vehicle?

Common causes include a faulty keyless entry antenna, damaged wiring connected to the antenna, or issues with the control module responsible for keyless entry.

4. How can I diagnose the B3119 GMC code?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the keyless entry antenna for physical damage, and checking the wiring and connections for breaks, shorts, or corrosion.

5. What steps are involved in repairing the issue associated with the B3119 GMC code?

Repair steps typically include replacing the faulty keyless entry antenna, repairing or replacing damaged wires, and ensuring all connections are secure. It may also be necessary to reset or reprogram the keyless entry system.

6. Is it safe to drive a GMC vehicle with the B3119 code?

While the vehicle can still be driven, the malfunctioning keyless entry system may pose convenience issues and potentially security risks if the vehicle does not lock properly.

7. Can a weak battery cause the B3119 code in a GMC vehicle?

Although less common, a weak battery might impact the voltage levels necessary for the keyless entry system to function properly, potentially leading to this error code.

8. What tools are needed to resolve the B3119 code on a GMC vehicle?

Necessary tools include an OBDII scanner, a multimeter for testing wires and voltages, and basic hand tools for accessing and replacing the antenna and wiring.

9. How long does it typically take to fix the B3119 code in a GMC vehicle?

The repair time can vary but generally takes about 1-2 hours, depending on the accessibility of the antenna and the extent of any wiring repairs needed.