OBD Honda Error code

Does anyone know what this error code and description means on a honda conversion. Any help is much appreciated.

P0106 - Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance.

Thanks chaps.
DSE

PS Sorry just realised I have posted this in the wrong section.

http://www.gearchatter.com/viewpost13239.php

Vac leak around the MAP sensor, or MAP sensor it’self needs a bit of a tap.