OBD-II code · Body
B0450 Microphone Circuit
The infotainment system has detected a fault in the hands-free microphone circuit. Voice commands and phone calls may have poor audio quality.
Is it safe to drive with B0450?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyMicrophone failed
- PossibleWiring open or shorted
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Microphone, Infotainment Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.