OBD-II code · Body
B0175 HVAC Recirculation Door Performance
The HVAC control module has detected that the recirculation door does not reach the commanded position within the expected time. The recirc door switches between fresh air and recirculated cabin air.
Is it safe to drive with B0175?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRecirculation door actuator failed
- PossibleRecirculation door mechanically binding
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Recirculation Door Actuator, HVAC Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.