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B0680 2015 GMC Sierra Code - Passenger Air Bag Off Indicator Circuit

Quick Answer

The B0680 diagnostic trouble code for a 2015 GMC Sierra indicates a problem with the Passenger Air Bag Off Indicator Circuit. Common causes include Faulty passenger occupancy sensor, Wiring or connection issues in the airbag system, Malfunctioning airbag control module. 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
B0680 2015 GMC Sierra indicates Passenger Air Bag Off Indicator Circuit.
Common causes
Common causes include Faulty passenger occupancy sensor, Wiring or connection issues in the airbag system, Malfunctioning airbag control module.
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 B0680 2015 GMC Sierra Description

The B0680 diagnostic trouble code for a 2015 GMC Sierra indicates a problem with the Passenger Air Bag Off Indicator Circuit. This means that there is an issue with the system that controls the indicator light that notifies the driver when the passenger airbag is deactivated. This could potentially pose a safety risk as the passenger airbag may not deploy in the event of a collision when it should.

OBDII Code B0680 2015 GMC Sierra - Passenger Air Bag Off Indicator Circuit
B0680 2015 GMC Sierra Code - Passenger Air Bag Off Indicator Circuit

Common Causes of B0680 2015 GMC Sierra

  1. Faulty passenger occupancy sensor.
  2. Wiring or connection issues in the airbag system.
  3. Malfunctioning airbag control module.
  4. Defective airbag indicator light.
  5. Software or programming issues in the airbag system.

Symptoms of B0680 2015 GMC Sierra

  1. The passenger airbag off light stays illuminated even when a passenger is seated.
  2. The passenger airbag does not deploy in a crash.
  3. An error message or warning light appears on the dashboard.
  4. The airbag system may fail a diagnostic test.

How to Fix B0680 2015 GMC Sierra

  1. Diagnose the issue using a professional diagnostic tool to pinpoint the exact cause.
  2. Inspect the wiring and connections in the airbag system for any damage or loose connections.
  3. Test the passenger occupancy sensor to ensure it is functioning properly.
  4. Replace any faulty components such as the sensor, control module, or indicator light.
  5. Clear the error codes and reset the airbag system to ensure proper functionality.

Cost to Fix B0680 2015 GMC Sierra

The cost of repairing a Passenger Air Bag Off Indicator Circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost can range from $100 to $500 for parts and labor. It's important to note that diagnostic time and labor rates can vary, so it's recommended to obtain quotes from local auto repair shops to get a more accurate estimate.

What does this mean?

Tech Notes for B0680 2015 GMC Sierra

B0680:01 Passenger Air Bag Off Indicator Circuit Short to Battery
B0680:02 Passenger Air Bag Off Indicator Circuit Short to Ground
B0680:04 Passenger Air Bag Off Indicator Circuit Open
B0680:05 Passenger Air Bag Off Indicator Circuit High Voltage/Open

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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 B0680 2015 GMC Sierra Code

1. What does the OBDII code B0680 mean on a 2015 GMC Sierra?

B0680 indicates a fault in the Passenger Air Bag Off Indicator Circuit, which is responsible for showing whether the passenger airbag is active or deactivated.

2. What are the common symptoms of code B0680?

The most common symptoms include the passenger airbag status light not illuminating, staying on constantly, or failing to indicate the correct airbag status.

3. What causes the B0680 code in a 2015 GMC Sierra?

The code can be caused by a faulty passenger airbag indicator, damaged wiring or connectors in the circuit, or a malfunction in the airbag control module.

4. Can I still drive my 2015 GMC Sierra with the B0680 code?

While the truck may still operate, the airbag system may not function properly in an accident, posing a safety risk. It’s important to address the issue promptly.

5. How is the B0680 code diagnosed?

A technician will use a scan tool to read the code, inspect the passenger airbag indicator circuit, check for damaged wires or connectors, and test the airbag control module.

6. How do I fix the B0680 code on my GMC Sierra?

Repairs may include replacing the passenger airbag indicator, repairing or replacing damaged wiring, or reprogramming or replacing the airbag control module.

7. How much does it cost to repair the B0680 code?

The cost varies depending on the repair, but replacing a faulty airbag indicator can range from $50–$150, while more extensive electrical repairs could cost $200 or more.

8. Can clearing the B0680 code with a scan tool fix the problem?

Clearing the code may temporarily reset the warning, but if the underlying issue isn’t resolved, the code will return.

9. Does a blown fuse cause the B0680 code?

A blown fuse in the airbag system could potentially cause issues with the indicator circuit. Checking the fuses is a good first step.

10. Do I need professional help to fix the B0680 code?

If you’re comfortable with basic electrical troubleshooting, you can inspect the wiring and connections yourself. However, for module-related issues or if you're unsure, it’s best to consult a certified technician.

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