Engine-CodesGeneric – B0680

B0680 Code - Passenger Air Bag Off Indicator Circuit

Quick Answer

The B0680 diagnostic trouble code (DTC) refers to the Passenger Air Bag Off Indicator Circuit. Common causes include Faulty passenger seat occupancy sensor: The sensor that detects whether a passenger is present in the seat may be malfunctioning, causing the indicator light to stay on or off incorrectly, Wiring issues: Damage or corrosion in the wiring harness connected to the passenger airbag off indicator circuit can disrupt the flow of electrical signals, leading to a malfunction, Faulty airbag control module: The module responsible for controlling the airbag system may have internal faults that affect the passenger airbag off indicator 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
B0680 indicates Passenger Air Bag Off Indicator Circuit.
Common causes
Common causes include Faulty passenger seat occupancy sensor: The sensor that detects whether a passenger is present in the seat may be malfunctioning, causing the indicator light to stay on or off incorrectly, Wiring issues: Damage or corrosion in the wiring harness connected to the passenger airbag off indicator circuit can disrupt the flow of electrical signals, leading to a malfunction, Faulty airbag control module: The module responsible for controlling the airbag system may have internal faults that affect the passenger airbag off indicator 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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code B0680 Description

The B0680 diagnostic trouble code (DTC) refers to the Passenger Air Bag Off Indicator Circuit. This code indicates that there is a malfunction in the circuit responsible for the passenger airbag off indicator in the vehicle. The passenger airbag off indicator is a crucial safety feature that alerts the driver when the passenger airbag is deactivated, typically due to the absence of a passenger or the presence of a child or small individual in the seat.

OBDII Code B0680 - Passenger Air Bag Off Indicator Circuit
B0680 Code - Passenger Air Bag Off Indicator Circuit

Common Causes of B0680

  1. Faulty passenger seat occupancy sensor: The sensor that detects whether a passenger is present in the seat may be malfunctioning, causing the indicator light to stay on or off incorrectly.
  2. Wiring issues: Damage or corrosion in the wiring harness connected to the passenger airbag off indicator circuit can disrupt the flow of electrical signals, leading to a malfunction.
  3. Faulty airbag control module: The module responsible for controlling the airbag system may have internal faults that affect the passenger airbag off indicator circuit.
  4. Loose connections: Loose or poor connections in the circuit can cause intermittent issues with the passenger airbag off indicator.
  5. Software glitches: In some cases, software issues within the vehicle's onboard computer system can cause malfunctions in the airbag system, including the passenger airbag off indicator.

Symptoms of B0680

  1. The passenger airbag off indicator light stays on constantly, regardless of whether there is a passenger in the seat or not.
  2. The passenger airbag off indicator light fails to illuminate when a passenger is not present in the seat.
  3. The airbag warning light on the instrument panel may also illuminate.
  4. The vehicle's airbag system may be disabled, leading to potential safety concerns in the event of a crash.
  5. The vehicle may fail a safety inspection due to the malfunctioning airbag system.

How to Fix B0680

  1. Diagnostic scan: Use a diagnostic scanner to retrieve the specific fault codes and pinpoint the exact issue with the passenger airbag off indicator circuit.
  2. Inspect wiring and connections: Check the wiring harness and connections related to the passenger airbag off indicator for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the passenger seat occupancy sensor: Test the functionality of the sensor to determine if it is accurately detecting the presence of a passenger in the seat.
  4. Check the airbag control module: Inspect the airbag control module for any faults or errors that may be affecting the passenger airbag off indicator circuit. Replace if necessary.
  5. Clear codes and test: After completing the repairs, clear the fault codes from the vehicle's computer system and test the passenger airbag off indicator to ensure it is functioning correctly.

Cost to Fix B0680

The cost of repairing a B0680 code related to the passenger airbag off indicator circuit can vary depending on the specific underlying issue and the vehicle's make and model. On average, the repair costs for this type of issue may range from $150 to $500, including parts and labor. It is important to note that the diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate. In general, labor rates typically range from $80 to $150 per hour, with rates potentially higher in metropolitan areas or at dealerships. Independent shops may offer lower labor rates, making them a cost-effective option for repairs.

Tech Notes for B0680

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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Code B0680 Information for Specific Makes

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 Code

1. What are the common symptoms of OBDII code B0680?

- The common symptoms of OBDII code B0680 include the passenger airbag off indicator light staying illuminated or flickering while driving.

2. What can cause the OBDII code B0680 to appear?

- The code B0680 is typically triggered by a malfunction in the passenger air bag off indicator circuit, which could be caused by a faulty sensor, wiring issue, or a problem with the indicator light itself.

3. How serious is OBDII code B0680?

- OBDII code B0680 is considered a moderate issue as it relates to the passenger air bag system. While the vehicle may still be safe to drive, it is important to address the problem promptly to ensure the proper functioning of the airbag system in case of an accident.

4. Can I still drive my vehicle with the OBDII code B0680 present?

- You can continue to drive your vehicle with the OBDII code B0680, but it is recommended to have the issue diagnosed and repaired as soon as possible to ensure the passenger airbag system is functioning correctly.

5. How can I diagnose and repair OBDII code B0680?

- Diagnosing and repairing OBDII code B0680 typically involves inspecting the passenger air bag off indicator circuit, checking the sensor, testing the wiring for continuity, and replacing any faulty components as needed.

6. Are there any DIY repair tips for OBDII code B0680?

- DIY repair for OBDII code B0680 may involve checking the indicator light bulb, inspecting the wiring connections, and ensuring the sensor is securely in place. However, it is recommended to consult a professional if you are unsure about the repair process.

7. Will resetting the OBDII code B0680 make the issue go away?

- Resetting the OBDII code B0680 may temporarily turn off the warning light, but it will not fix the underlying issue causing the code to appear. It is important to diagnose and repair the problem to prevent future occurrences.

8. Can OBDII code B0680 affect the overall safety of the vehicle?

- Yes, OBDII code B0680 can impact the overall safety of the vehicle, especially in the event of a collision where the passenger airbag system may not deploy properly if the issue is not addressed.

9. How much does it typically cost to repair OBDII code B0680?

- The cost to repair OBDII code B0680 can vary depending on the cause of the issue and the labor rates in your area. It is recommended to get a diagnostic from a professional technician to determine the exact cost of repair.

10. Is it necessary to have the OBDII code B0680 repaired at a dealership?

- While you can have OBDII code B0680 repaired at a dealership, it is not necessary. Qualified independent repair shops or automotive technicians can also diagnose and repair the issue effectively.

1. What are the common symptoms of OBDII code B0680 (Passenger Air Bag Off Indicator Circuit)?

- The common symptoms include the passenger airbag off indicator staying illuminated or not functioning properly.

2. What are the possible causes of OBDII code B0680?

- The code B0680 can be caused by a malfunctioning passenger air bag off indicator sensor, wiring issues, or a faulty airbag control module.

3. How can I diagnose the OBDII code B0680?

- Diagnosing the code B0680 typically involves using a scan tool to retrieve the code, inspecting the indicator sensor and associated wiring, and testing the airbag control module.

4. Is it safe to drive with OBDII code B0680?

- It is not recommended to drive with the code B0680 present, as it indicates a potential issue with the passenger airbag system, which is crucial for passenger safety.

5. How can I repair OBDII code B0680?

- Repairing the code B0680 may involve replacing the faulty passenger air bag off indicator sensor, repairing damaged wiring, or reprogramming the airbag control module.

6. Can I reset OBDII code B0680 without fixing the underlying issue?

- Resetting the code without addressing the underlying issue will only temporarily clear the code. It is important to diagnose and repair the root cause to ensure proper functionality of the airbag system.

7. Are there any DIY tips for fixing OBDII code B0680?

- DIY tips for fixing the code B0680 may include checking and securing the wiring connections, inspecting the indicator sensor for damage, and following repair guides specific to your vehicle.

8. How much does it cost to repair OBDII code B0680 at a dealership or repair shop?

- The cost of repairing the code B0680 can vary depending on the root cause of the issue, the labor rates of the dealership or repair shop, and the cost of any replacement parts needed.

9. Can OBDII code B0680 be triggered by a loose connection?

- Yes, a loose or corroded connection in the passenger air bag off indicator circuit can trigger the code B0680. It is important to check all connections during diagnosis.

10. Is OBDII code B0680 a common issue in certain vehicle makes and models?

- The code B0680 can be a common issue in some vehicle makes and models that are equipped with a passenger air bag off indicator system. It is always recommended to check for any manufacturer recalls related to this code.

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