B0061 code meaning
Passenger Seat Belt Tension Sensor
What B0061 means
B0061 covers the belt tension sensor of the front passenger seat, a key input for passenger occupant classification. FMVSS 208 lets carmakers meet the child-seat rules for advanced airbags by fitting a system that automatically switches the passenger airbag off for small occupants. A child seat strapped in tightly presses into the cushion and can look as heavy as an adult on the weight sensor; the tension sensor exposes that. Delphi's patent lets the occupant module subtract belt load from seat weight and suppress the airbag above a calibrated pull of about 30 lb, and the sensor reports out-of-range values as faults. No carmaker documents B0061 publicly with this meaning. Saab 9-3 modules use it for a low driver curtain loop resistance.
B0061 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B0061
- Airbag warning lamp on
- Passenger airbag status indicator may show an unexpected on or off state
- A tightly fastened child seat may not be recognised reliably
- Safety note: the sensor plug sits beside the passenger seat near airbag and pretensioner plugs; only unplug it with the battery disconnected and the wait time observed
Common causes of B0061
- Most likelyLoose or corroded plug at the passenger belt tension sensor
- PossibleTension sensor reading out of range or stuck
- Less likelyInput fault in the occupant classification or airbag module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Seat belt tension sensorOccupant detection moduleSRS seat wiringSRS control module
What each part of B0061 means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 61 | The exact fault in that area. |
What to do next
- Note B0061 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B0061
What does B0061 mean?
B0061 means "Passenger Seat Belt Tension Sensor". B0061 covers the belt tension sensor of the front passenger seat, a key input for passenger occupant classification. It is a generic code, so it means the same on every make.
Is it safe to drive with B0061?
B0061 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B0061 fail an emissions test?
B0061 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B0061 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will B0061 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.