mongoimport complains invalid character '\x02' in string literal

mongoimport failed when the json content contains ascii code like 0x01, 0x02..

The file content is:

{"a":"test1","b":"1"}

{"a":"test2^B","b":"2"}  

{"a":"test3","b":"4"}

^{B is not two charachters (} + B)but one which can be input using ctrl+b in vim editor.

When importing this file using mongoimport -d test -c a --file=test.json, it fails and complains the error:
Failed: error processing document #2: invalid character '\x02' in string literal
imported 0 documents