Does anyone know where I can buy a device to connect to the main ECU for reading the codes? I don't want to buy from eg e-bay or amazon - just local shop purchase.

argos will probably be the cheapest from a shop.

cheapy ones aren't that wonderful and take what it says as a bit of a guide in the right direction rather than gospel

What Make / Model is it for?

Ford - but can they be just a universal one?

Do you mean you want one to plug into the obd port?

There are a fouple of people on here who can plug in a diagnostic machine and read your fault codes.

if you just want it reading give me a shout.

Sorry - couldn't remember the name - its a diagnostic machine, thanks sam15). Are there any universal ones on the market?