B1428: Lamp Seat Belt Circuit Failure
What does B1428 mean?
B1428 is a diagnostic trouble code indicating "Lamp Seat Belt Circuit Failure". This code relates to your vehicle's seats and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Symptoms you may notice
- Check engine light (MIL) illuminated on dashboard
- Intermittent warning lights
- Erratic gauge readings
Estimated repair cost
Typical range in Australia (parts + labour)
Common causes
- Faulty seats component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
This code sits in the airbag or seat belt warning circuit rather than in the restraints themselves. The airbags may well be fine, but the light or chime that is supposed to tell you when they are not has stopped working, so you have lost your only warning. It is also an inspection failure in most states. Get it diagnosed rather than assuming the system behind it is healthy.
Get a diagnosis for YOUR car
Code B1428 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.