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Engine-Codes – GMC – B1346 GMC

B1346 GMC Code - Driver Front Airbag Resistance Too High

Quick Answer

The B1346 GMC code indicates that there is an issue with the driver front airbag system, specifically that the resistance in the circuit is too high. Common causes include Faulty airbag module: A malfunctioning airbag module can cause high resistance in the circuit, preventing the airbag from deploying properly, Loose or corroded connections: Loose or corroded connections in the airbag system can increase resistance in the circuit, triggering this code, Damaged clock spring: The clock spring is responsible for maintaining electrical connections in the steering wheel, and if it is damaged, it can lead to high resistance in the airbag circuit. 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
B1346 GMC indicates Driver Front Airbag Resistance Too High.
Common causes
Common causes include Faulty airbag module: A malfunctioning airbag module can cause high resistance in the circuit, preventing the airbag from deploying properly, Loose or corroded connections: Loose or corroded connections in the airbag system can increase resistance in the circuit, triggering this code, Damaged clock spring: The clock spring is responsible for maintaining electrical connections in the steering wheel, and if it is damaged, it can lead to high resistance in the airbag circuit.
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 11, 2024
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Code B1346 GMC Description

The B1346 GMC code indicates that there is an issue with the driver front airbag system, specifically that the resistance in the circuit is too high. Airbags are a crucial safety feature in any vehicle, as they are designed to inflate rapidly in the event of a collision to protect the occupants from impact. When the resistance in the driver front airbag circuit is too high, it can prevent the airbag from deploying properly or at all in the event of a crash. This can significantly increase the risk of injury to the driver in a collision.

OBDII Code B1346 GMC - Driver Front Airbag Resistance Too High
B1346 GMC Code - Driver Front Airbag Resistance Too High

Common Causes of B1346 GMC

  1. Faulty airbag module: A malfunctioning airbag module can cause high resistance in the circuit, preventing the airbag from deploying properly.
  2. Loose or corroded connections: Loose or corroded connections in the airbag system can increase resistance in the circuit, triggering this code.
  3. Damaged clock spring: The clock spring is responsible for maintaining electrical connections in the steering wheel, and if it is damaged, it can lead to high resistance in the airbag circuit.
  4. Wiring issues: Any damage to the wiring harness or individual wires in the airbag circuit can result in high resistance and trigger this code.

Symptoms of B1346 GMC

  1. Airbag warning light on the dashboard: The most common symptom of this issue is the illumination of the airbag warning light on the dashboard. This light is specifically designed to alert the driver to a problem with the airbag system.
  2. Non-deployment of airbag: In the event of a collision, the driver front airbag may fail to deploy or deploy with reduced effectiveness due to the high resistance in the circuit.
  3. Intermittent airbag deployment: The airbag may deploy unexpectedly or intermittently, which can be dangerous for the driver.
  4. Faulty horn or steering wheel controls: In some cases, a high resistance in the airbag circuit can affect other components in the steering wheel, such as the horn or steering wheel controls.

How to Fix B1346 GMC

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the fault codes and pinpoint the exact cause of the high resistance in the driver front airbag circuit.
  2. Inspect airbag components: Check the airbag module, clock spring, wiring harness, and connections for any visible damage or faults.
  3. Repair or replace faulty components: Depending on the diagnosis, repair or replace any damaged components such as the airbag module, clock spring, or wiring.
  4. Clear fault codes: After the repair is completed, clear the fault codes from the vehicle's system to reset the airbag warning light on the dashboard.
  5. Test the airbag system: Perform a thorough test of the airbag system to ensure that the issue has been resolved and that the airbag deploys as intended in a controlled environment.

Cost to Fix B1346 GMC

The cost of repairing a driver front airbag resistance too high issue can vary depending on the specific cause of the problem and the extent of the damage. On average, the parts for this repair can range from $200 to $800, with labor costs adding an additional $100 to $300. Therefore, the total repair cost can be anywhere from $300 to $1100. It's important to note that the actual cost may be higher or lower based on the location, vehicle make and model, and the shop's labor rates. It is recommended to obtain quotes from multiple auto repair shops to find the best price for the repair.

Need more information about the B1346 GMC code?

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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1346 GMC Code

1. What are the common symptoms of OBDII code B1346 GMC (Driver Front Airbag Resistance Too High)?

- The common symptoms include the airbag warning light staying illuminated on the dashboard and a message indicating an issue with the driver front airbag system.

2. What are some possible causes of OBDII code B1346 GMC?

- Potential causes of this code may include a faulty driver front airbag module, damaged wiring or connectors in the airbag system, or issues with the airbag sensor.

3. How serious is the OBDII code B1346 GMC (Driver Front Airbag Resistance Too High)?

- This code indicates a potential safety issue with the driver front airbag system, so it is crucial to address it promptly to ensure the airbag functions correctly in case of an accident.

4. Can I continue driving my vehicle with OBDII code B1346 GMC present?

- It is not recommended to drive the vehicle with this code active, as it means the driver front airbag system may not deploy properly in the event of a collision.

5. How can I diagnose and repair OBDII code B1346 GMC?

- Diagnosing and repairing this code typically involves inspecting the driver front airbag system for any faults, testing the airbag module and sensor, and addressing any wiring or connector issues.

6. Can I reset the OBDII code B1346 GMC on my own?

- While you can clear the code with an OBDII scanner, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. Are there any DIY tips for fixing OBDII code B1346 GMC?

- DIY tips may include checking and securing the wiring connections in the driver front airbag system, but it is recommended to have a professional inspect and repair the system for safety reasons.

8. How much does it cost to repair OBDII code B1346 GMC?

- The cost of repairing this code can vary depending on the specific issue causing it, but it may involve replacing the driver front airbag module, repairing wiring, or fixing other components in the airbag system.

9. Can a mechanic help me with OBDII code B1346 GMC even if I don't drive a GMC vehicle?

- Yes, a qualified mechanic can diagnose and repair OBDII codes across different vehicle makes and models, including addressing the Driver Front Airbag Resistance Too High issue on non-GMC vehicles.

10. Is it necessary to have the OBDII code B1346 GMC fixed immediately?

- Yes, it is crucial to address this code promptly to ensure the proper functioning of the driver front airbag system and maintain the safety of the vehicle occupants in the event of a collision.

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