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

B0150

HVAC Mode Door Range/Performance

The HVAC control module has detected that the air distribution mode door (e.g. floor/face/defrost) does not reach the commanded position within the expected time. The actuator may be stuck, the door binding, or the position feedback inaccurate.

SystemBody
Typegeneric / SAE
GroupB0
Range / number1 / 50

Possible causes

  • Mode door actuator motor failed high
  • Mode door mechanically binding medium
  • Wiring or connector fault to actuator low

Symptoms

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

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 80–600 €
  • Estimated time: 0.5–4 h
  • Component: mode door actuator
  • Component: hvac control module
  • Component: mode door linkage

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