Default Bluetooth 11:22:33:DD:EE:FF don't working

Nexus 4 KKt 4.4.2 don't work with bluetooth, the problem is the same described ....

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Code:
http : / /stackoverflow.com/questions/18657427/ioexception-read-failed-socket-might-closed-bluetooth-on-android-4-3?answertab=active#tab-top

But i don't understand how may i fix it ?

The bluetooth work well with galaxy ace 2 ( i8160 ) with GB 2.3.6 and JB 4.1.2.

App on playstore
alfa odb
elm327 terminal
Bluetooth terminal