407 unknown fault codes ???

hi .
i have recently scanned a mates 54 plate 407 and brought up a list .
p0121 , p1447 , p002a and b041.
i know one of these is throttle position sensor but no text or info was available for the others.
this was scanned using racscan built by omitech.
even my own tech department cannot find info on these codes.
hoping some experts ( thats you ) :nod: may shed some light

andy