OBD-II code · Body
B0263 HVAC Air Mix Door 2 Circuit
A fault has been detected in the air mix door 2 actuator circuit, used in dual-zone HVAC systems for the passenger side.
Is it safe to drive with B0263?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyActuator motor failure
- PossibleMix door jammed
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
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- HVAC Air Mix Actuator 2, HVAC Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.