Code result
B0450
Microphone Circuit
Moderate severity
What it means
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?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Microphone failed
highOne of the most commonly reported causes for this code — check this first.
Wiring open or shorted
mediumA plausible cause — test and verify before replacing parts.
Related help
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