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Engine-Codes – Generic – B1699

B1699 Code - Passengers Seat Occupied Switch Circuit Short to Ground

Quick Answer

The B1699 diagnostic trouble code (DTC) indicates that there is a short to ground in the circuit of the passenger's seat occupied switch. Common causes include Damaged wiring or connectors in the passenger's seat occupied switch circuit, Faulty passenger's seat occupied switch, Corrosion or contamination in the switch 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
B1699 indicates Passengers Seat Occupied Switch Circuit Short to Ground.
Common causes
Common causes include Damaged wiring or connectors in the passenger's seat occupied switch circuit, Faulty passenger's seat occupied switch, Corrosion or contamination in the switch 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 Aug 30, 2024
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Code B1699 Description

The B1699 diagnostic trouble code (DTC) indicates that there is a short to ground in the circuit of the passenger's seat occupied switch. This switch is responsible for detecting whether the passenger's seat is occupied, which is crucial for the proper operation of the vehicle's airbag system. A short to ground means that there is an unintended connection between the switch circuit and the vehicle's ground, which can lead to incorrect signals being sent to the airbag control module. This can potentially result in the airbag system not deploying when needed or deploying unexpectedly, posing a safety risk to the occupants of the vehicle.

OBDII Code B1699 - Passengers Seat Occupied Switch Circuit Short to Ground
B1699 Code - Passengers Seat Occupied Switch Circuit Short to Ground

Common Causes of B1699

  1. Damaged wiring or connectors in the passenger's seat occupied switch circuit
  2. Faulty passenger's seat occupied switch
  3. Corrosion or contamination in the switch circuit
  4. Short circuit caused by water intrusion or physical damage

Symptoms of B1699

  1. Airbag warning light illuminated on the dashboard
  2. Inconsistent or inaccurate readings from the passenger seat occupied sensor
  3. Airbag system fault codes stored in the vehicle's computer
  4. Airbag system not deploying in the event of a collision

How to Fix B1699

  1. Begin by inspecting the wiring and connectors in the passenger's seat occupied switch circuit for any signs of damage or corrosion.
  2. Test the passenger's seat occupied switch using a multimeter to determine if it is functioning properly.
  3. Repair or replace any damaged wiring or connectors in the circuit.
  4. Replace the passenger's seat occupied switch if it is found to be faulty.
  5. Clear the DTCs from the vehicle's computer and perform a test drive to verify that the issue has been resolved.

Cost to Fix B1699

The cost of repairing a B1699 DTC can vary depending on the specific cause of the issue and the labor rates at the repair shop. On average, the repair for this issue could range from $100 to $300, including 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 for a more accurate estimate.

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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 B1699 Code

1. What are the common symptoms of OBDII code B1699 related to the Passengers Seat Occupied Switch Circuit Short to Ground?

The common symptoms include the airbag warning light staying illuminated, the passenger airbag being disabled, and potential issues with the airbag system's functionality.

2. What can cause the Passengers Seat Occupied Switch Circuit to short to ground and trigger code B1699?

Possible causes include damaged wiring or connectors in the seat occupancy sensor circuit, a faulty seat occupancy sensor, or a short circuit in the system.

3. How can I diagnose the Passengers Seat Occupied Switch Circuit Short to Ground issue causing OBDII code B1699?

Diagnosis involves inspecting the wiring and connectors for damage, testing the seat occupancy sensor for proper functionality, and checking for any short circuits in the system using a multimeter.

4. Is it safe to drive with OBDII code B1699 triggered by the Passengers Seat Occupied Switch Circuit Short to Ground?

It is not recommended to drive with this code active, as it may affect the proper deployment of the passenger airbag in the event of a collision.

5. Can I reset OBDII code B1699 related to the Passengers Seat Occupied Switch Circuit Short to Ground without fixing the underlying issue?

Resetting the code without addressing the root cause will likely result in the code reappearing once the system detects the fault again.

6. Are there any DIY repair tips for fixing OBDII code B1699 caused by the Passengers Seat Occupied Switch Circuit Short to Ground?

DIY repair tips may include carefully inspecting and repairing damaged wiring, replacing a faulty seat occupancy sensor, or addressing any short circuits in the system if accessible.

7. How much does it typically cost to repair OBDII code B1699 due to the Passengers Seat Occupied Switch Circuit Short to Ground at a repair shop?

The cost can vary depending on the specific cause of the issue, but it may involve labor costs for diagnosis and repair, as well as potential parts replacement expenses.

8. Can a professional automotive technician help me fix OBDII code B1699 linked to the Passengers Seat Occupied Switch Circuit Short to Ground?

Yes, a qualified technician can diagnose the problem accurately, repair the issue following manufacturer guidelines, and ensure the airbag system is functioning correctly.

9. Will fixing OBDII code B1699 caused by the Passengers Seat Occupied Switch Circuit Short to Ground affect the vehicle's safety?

Yes, addressing this issue promptly will help ensure the proper operation of the passenger airbag system, contributing to the overall safety of the vehicle's occupants.

10. How long does it typically take to repair OBDII code B1699 related to the Passengers Seat Occupied Switch Circuit Short to Ground?

The repair time can vary depending on the exact cause of the issue and the complexity of accessing and repairing the components involved, but it may take a few hours to complete the repair.

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