Engine-CodesGeneric – B1673

B1673 Code - Seat Driver Occupied Input Circuit Open

Quick Answer

The B1673 diagnostic trouble code indicates that there is an issue with the seat driver occupied input circuit being open. Common causes include Faulty seat occupancy sensor, Damaged wiring or connectors related to the seat occupancy sensor, Corrosion in the electrical connections. 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
B1673 indicates Seat Driver Occupied Input Circuit Open.
Common causes
Common causes include Faulty seat occupancy sensor, Damaged wiring or connectors related to the seat occupancy sensor, Corrosion in the electrical connections.
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 08, 2024
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Code B1673 Description

The B1673 diagnostic trouble code indicates that there is an issue with the seat driver occupied input circuit being open. This means that the vehicle's system is not receiving the proper signal from the driver's seat occupancy sensor. The seat occupancy sensor is responsible for detecting whether the driver's seat is occupied or not, which is crucial for the proper functioning of various vehicle systems such as airbag deployment and seatbelt reminders.

OBDII Code B1673 - Seat Driver Occupied Input Circuit Open
B1673 Code - Seat Driver Occupied Input Circuit Open

Common Causes of B1673

  1. Faulty seat occupancy sensor.
  2. Damaged wiring or connectors related to the seat occupancy sensor.
  3. Corrosion in the electrical connections.
  4. Loose or disconnected wiring harness.
  5. Impact or damage to the driver's seat affecting the sensor's functionality.

Symptoms of B1673

  1. Airbag warning light illuminated on the dashboard.
  2. Seatbelt reminder not working properly.
  3. Airbags not deploying in a collision.
  4. Inconsistent behavior of the seat adjustment controls.
  5. Fault codes related to airbag system stored in the vehicle's computer.

How to Fix B1673

  1. Begin by conducting a visual inspection of the wiring and connectors associated with the seat occupancy sensor. Look for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity of the wiring and connectors to determine if there are any open circuits.
  3. If the wiring and connectors are in good condition, proceed to test the seat occupancy sensor itself using a multimeter or specific diagnostic tools.
  4. Replace any faulty wiring, connectors, or the seat occupancy sensor as needed.
  5. Clear the fault codes from the vehicle's computer and perform a test drive to ensure the issue has been resolved.

Cost to Fix B1673

The typical repair costs for addressing a B1673 code related to the seat driver occupied input circuit open can range from $150 to $400, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple sources to get an accurate estimate.

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Code B1673 Information for Specific Makes

  • B1673 Chrysler — Power Liftgate Open Direction Ratchet Secondary Switch Performance
  • B1673 Dodge — Power Liftgate Open Direction Ratchet Secondary Switch Performance
  • B1673 Jeep — Power Liftgate Open Direction Ratchet Secondary Switch Performance
  • B1673 RAM — Power Liftgate Open Direction Ratchet Secondary Switch Performance
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 B1673 Code

What does the OBDII code B1673 mean?

B1673 indicates that there is an open circuit in the driver seat occupied input, which means the vehicle's system is not detecting whether the driver seat is occupied or not.

What are common symptoms of a B1673 code?

Common symptoms include the airbag warning light being illuminated, the driver seat occupancy sensor not functioning, and potential issues with seatbelt or airbag systems.

What causes the B1673 code to trigger?

The code can be triggered by a faulty seat occupancy sensor, damaged wiring or connectors, a blown fuse, or issues with the airbag control module.

How can I diagnose a B1673 code?

To diagnose this code, inspect the wiring and connectors for damage, check the seat occupancy sensor for proper operation, and use a multimeter to test for continuity in the circuit.

What should I check first when troubleshooting a B1673 code?

Start by inspecting the wiring and connectors related to the driver seat occupancy sensor for any signs of wear, damage, or disconnection.

Can I clear the B1673 code without fixing the issue?

While you can clear the code using an OBDII scanner, it will likely reappear if the underlying issue is not resolved.

Will driving with a B1673 code affect my vehicle's performance?

While it may not affect performance directly, the B1673 code can impact safety features like airbags, which could be crucial in an accident.

Are there any specific tools needed to fix the B1673 code?

Basic tools like a multimeter for electrical testing, OBDII scanner for code reading, and standard hand tools for accessing the seat and wiring are typically required.

Can a dealership assist with fixing the B1673 code?

Yes, a dealership can provide a comprehensive diagnosis and repair service, especially for issues related to safety systems like airbags and seat sensors.

Is it safe to drive a vehicle with a B1673 code?

It is not recommended to drive a vehicle with this code, as it may indicate a malfunction in the airbag system, compromising passenger safety during an accident.

Discuss the causes and fixes for B1673 OBDII Code

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