CAR OBD CODES
B2345body

B2345 – Seat Switch Reference Voltage Negative Common Open Circuit

What does B2345 mean?

B2345 is a manufacturer-specific OBD-II diagnostic trouble code in the Body category. Its definition is: Seat Switch Reference Voltage Negative Common Open Circuit. Body codes (B-codes) cover vehicle body functions including airbags, seat belts, power windows, lighting, horn, wipers, and more.

Code breakdown

SystemB — Body
TypeManufacturer-specific code (meaning may vary by vehicle make and model)

Common symptoms

  • A warning light related to the affected system may be on (e.g. airbag/SRS light)
  • The specific body feature (lighting, wipers, windows, restraints) may not work correctly
  • In some cases the fault is stored without any visible symptom

How to diagnose

  1. 1Scan the body control module (BCM) and any related module to confirm the stored code.
  2. 2Check the wiring and connectors for the affected circuit, including grounds.
  3. 3For restraint (airbag) codes, treat the system with care and consider professional service.
  4. 4Verify the component operates correctly and matches specification.
  5. 5Clear the code and re-test the affected feature.

Severity varies by code and vehicle. Some codes are minor, while others can affect drivability or safety. When in doubt, consult a qualified technician.

Related codes

B2341B2342B2343B2344B2346B2347B2348B2349
Back to all Body Codes →

This information is provided for general reference only and may vary by manufacturer, model, and year. It is not a substitute for professional diagnosis or repair.