Airbag code 22 - can I fix this?

Hello,

I have airbag warning code of 22=Safing Sensor Output Shorted to Battery Voltage.

I had a similar problem a few months ago, and was fixed under warranty while my car was in for something else (though looking at my invoice yesterday there’s no mention of it!)

Has anyone else has this problem, and fixed it yourself?

Thanks [:)]

(MK3)