AutoCodes – Generic – B1673

B1673 Code - Seat Driver Occupied Input Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Seat Driver Occupied Sensor. Common causes include Faulty Seat Driver Occupied Sensor, Seat Driver Occupied Sensor harness is open or shorted, Seat Driver Occupied Sensor circuit poor electrical connection. 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 Driver Occupied Sensor, Seat Driver Occupied Sensor harness is open or shorted, Seat Driver Occupied Sensor circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 3,971

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1673 Description

The Body Control Module (BCM) monitors the Seat Driver Occupied Sensor. The BCM sets the OBDII code when the Seat Driver Occupied Sensor is not to factory specifications.

OBDII Code B1673 - Seat Driver Occupied Input Circuit Open - AutoCodes.com — B1673 Code - Seat Driver Occupied Input Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1673?

Faulty Seat Driver Occupied Sensor
Seat Driver Occupied Sensor harness is open or shorted
Seat Driver Occupied Sensor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1673?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1673 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1673 code?

Need more information on how to fix the B1673 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1673 code diagnosed by a professional: Find a repair shop in your area

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.