OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Body generic / SAE

B0072

Driver Seatbelt Pretensioner Loop Open

The SRS module detects an open circuit in the driver seatbelt pretensioner deployment loop. The pretensioner cannot fire and the airbag warning lamp is on.

SystemBody
Typegeneric / SAE
GroupB0
Range / number– / 72

Possible causes

  • Pretensioner connector unplugged high
  • Wire break in B-pillar medium

Symptoms

  • Warning light or symbol related to the affected system
  • Comfort or safety function impaired

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 150–800 €
  • Estimated time: 0.8–2.5 h
  • Component: driver seatbelt pretensioner
  • Component: srs seat wiring

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication