warning on dashboard

Hi

I am getting the coolant/air con warning light some up on the dashboard couple times when driving.

Took it to garage to get the OBD read and they couldnt, so before I take it to Vauxhall garage who will most likely rip me off, what is common cause of this warning.

The car isnt overheating or anything or if someone in the West Yorkshire area has the kit to read the OBD that would be great

Zaf A 2002 2.0 TDi Y20DTH

this comes on with aircon and water cooling , check your main fan works when it reaches the normal fan-run temp (usually 100c) (The Rear one)
then switch on your air con and check to see if the aircon fan is working ok too...(The Front one)..

Have you done the pedal test..
this will give you any fault codes..

how to do it can be found in the HOW TO section of the Forum