Pressure sensor??

Is that to do with boost pressure? car wasn't boosting properly there but sorted the problem there was a block in a vacuum line is it just a matter of reseting the ecu now to clear the fault?

Your MAP (Manifold Absolute Pressure) sensor will monitor your boost/vacuum pressure and send signals to the ecu which controls boost through the boost solenoid.

Yeah just reset the ecu now and she should be fine

http://www.scoobypedia.co.uk/index.php/Knowledge/ECUReset

Good man thank you.