B1675 – OBD-II DTC

OBD-II DTC B1675 – Seat Driver Occupied Input Circuit Short To Ground

DTC B1675 meaning

DTC B1675 refers to a diagnostic trouble code indicating a problem with the seat driver occupied input circuit. Specifically, it signifies that there is a short to ground in the circuit that detects whether the driver’s seat is occupied. This circuit is crucial for the proper functioning of safety features such as airbags and seatbelt reminders.

DTC B1675 symptoms

Common symptoms associated with DTC B1675 may include:

• Airbag warning light illuminated on the dashboard
• Inconsistent operation of the airbag system
• Seatbelt reminder chime malfunction
• Driver’s seat occupancy sensor not functioning

DTC B1675 causes

Several factors can lead to the occurrence of DTC B1675, including:

• Damaged wiring or connectors in the seat occupancy sensor circuit
• Faulty seat occupancy sensor
• Corrosion or dirt in electrical connections
• Issues with the vehicle’s body control module (BCM)

DTC B1675 seriousness

DTC B1675 is considered serious because it can affect the functionality of the airbag system. If the system does not recognize that the driver’s seat is occupied, it may not deploy the airbag in the event of a collision, increasing the risk of injury. Therefore, it is important to address this issue promptly.

How to diagnose DTC B1675

To diagnose DTC B1675, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1675 code.
2. Inspect the wiring and connectors related to the driver’s seat occupancy sensor for damage or corrosion.
3. Check the seat occupancy sensor for proper operation using a multimeter.
4. Examine the body control module for any faults or issues.
5. Clear the code and perform a test drive to see if the code returns.

How to fix DTC B1675 step-by-step instructions

To fix DTC B1675, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and repair any damaged wiring or connectors in the seat occupancy sensor circuit.
3. If the seat occupancy sensor is faulty, replace it with a new one.
4. Clean any corrosion or dirt from electrical connections to ensure good contact.
5. Reconnect the battery and use an OBD-II scanner to clear the trouble code.
6. Test the system by performing a test drive to ensure the code does not return.

How to erase DTC B1675

To erase DTC B1675, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to indicate that the codes have been cleared.
6. Disconnect the scanner and perform a test drive to ensure the issue is resolved.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.