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

B0205

HVAC Defroster Door Position

The HVAC control module has detected that the defroster door (windshield air outlet flap) does not reach the commanded position. Defrosting performance may be reduced.

SystemBody
Typegeneric / SAE
GroupB0
Range / number2 / 05

Possible causes

  • Door actuator motor failed or stripped high
  • Door linkage broken 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: 200–1500 €
  • Estimated time: 1.5–8 h
  • Component: blend door actuator
  • Component: hvac control module

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