Probably good value for that money providing you understand what it is and what it does.
European On Board Diagnostics came into legislation in the UK on 1st January 2001 for petrol cars and 1st January 2004 for diesels. It provided a standardisation for fault engine emission related codes across five protocols which cover most vehicles manufactured in Europe, North America and Asia.
An EOBD scantool will only be capable of reading fault codes and live data (if that function is supported) that relate to engine emissions. It will not read engine specific data, nor will it connect to any other module on the vehicle. As it is a read only device it will not be able to write to any controller, therefore you will not be able to make any adaptions. But since EOBD is a standard it should do what any other EOBD will do. So for £15 it's worth having and keeping in your car.
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