B0152Driver Buckle Switch Circuit Malfunction
- Generic OBD-II code · Body
- How the car detects it
- B0152 appears in no J2012 code list and in no public carmaker document. In J2012 the driver's buckle sensor is B0050, so the title duplicates that code. The switch tells the vehicle whether the tongue is latched. TRW's patent US5898366A places a Hall device, a magnet and an armature in the buckle, and the latch movement changes the flux and thus the output; US5966784A uses a flux reversal for the same purpose and adds that the signal can steer airbag deployment. FMVSS 208 S7.3 requires a driver belt warning: a lamp and a 4 to 8 second chime, or a lamp lasting at least 60 seconds. A circuit fault can leave the reminder on with the belt fastened, or silent without it.
- What you may notice
- Belt reminder for the driver stays on or does not come on
- Airbag warning lamp on in vehicles that read the buckle in the airbag module
- Safety note: the buckle plug sits under the seat near airbag and pretensioner plugs; unplug only with the battery off and the wait time observed
- Likely causes
- LikelyBuckle plug under the driver seat loose or corroded
- PossibleBuckle lead pinched or broken by seat movement
- PossibleHall sensor or contact in the buckle defective, buckle must be replaced
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.