Obd Port

[coastline taxis]

c5 02 rhz engine

Plug scanner inn and saying that there is no live comming from the port. Checked every fuse and wire also everything else on the car works fine. The reason we want to be into it is that a few weeks ago the management light came on for a few hours then went off. Any ideas as to where to start

[techbod]

has it got the factory radio? if not it could be the CAN wire off so no way to connect to the port.