Hi, I'm currently experience this same problem with a Crucial MX500 SSD (500gb) in a early 2011 Macbook Pro 13".
Last October I installed the new SSD without formatting it, and following the Mac instructions I installed de Mac OS in the new SSD and it functioned properly.
4 months later my mac didn't boot and by restarting in safe mode (holding alt/option key) my SSD doesn't show up.
I clicked on "recover system from the internet" and clicked on "disk utility".
Finally the SSD shows up but I can't fix it or repair it and the error is the following:
"Volume verification error. Files system not recognized"
Checking The Partitions Map Scheme it says "Master Booting Register (MBR)".
I think my SATA cable is OK and there is no hardware malfunctions, but I'm going to connect my old HD in order to discard this possibility.
Looks like i will have to format my SSD in order to reinstall the OS software, but I will try to connect my SSD via usb-STA cable before in order to save my information as I don't want to lose it in the format.
Could this Macbook Pro 2011 error in SSD be fixed?
If I repair my SSD (formating and installing OS) will this error repeat in the future?
Thanks for the support!