Hello again - thank you for your reply and info ..

Thats fine - thats all I need - plus it tells me that the equipment used is not using the right software and therefore coming up with erroneous faults -

This does happen sometimes- and the garage can never find the "compnenet" - because it doesn't have such !

As you have the fault light coming on , there will be fault codes logged in the Ecu - but you need to use either a code reader capable of reading "P" codes - or and ideally the Tech 2 machine -

Some garages have this -so you could phone around - or All Vauxhall dealers have this equipment - and using that will sort this properly for you for sure -

You do need the correct code - the light is telling you there is a fault - and the Ecu has logged it - but some equipment used , as appears to have been the case, literally cant read - due to software issues / incompatibilities to these engine management systems -

So do as above to get this sorted out properly for you now - that will do it no problem for you.

Im very pleased to have helped you - Let me know if I can help anymore...

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Kind Rgds - MIKE