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!

Powertrain generic / SAE

P05BB

Restraints Deployed

The restraint control module reports that one or more airbag or pretensioner stages have been deployed. The engine ECU latches this and runs the crash strategy - fuel cutoff, hazard lights, unlock central locking, disable cruise. The code can only be cleared after the restraint module is reset (typically requires module replacement).

SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / BB

Possible causes

  • Deployed after a crash event high

Inspection / repair

  • Difficulty: hard
  • DIY: shop recommended
  • Estimated cost: 800–6000 €
  • Estimated time: 3–15 h
  • Component: restraint control module
  • Component: airbag
  • Component: seat belt pretensioner
  • MIL / check engine light

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