Greetings,
The first error code is a communication error in the system. The second error code is a USB device malfunction.
I found some information on the communication error here. I am unfamiliar with this Lexus system as I stopped working on them quite a few years back
https://carfixlib.com/b15d0-most-communication-malfunction-lexus/
The second code could simply just mean you have a bad USB or unsupported USB plugged into the system.
I hope this helps you along a little bit.
Cheers
Monte!!