It doesn't fix the faults

If that was the case we'd all be master mechanics and save millions on garage bills a year

Make a list of the codes, do some research to find out what may be involved in putting them right and then decide if its worth haggling
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LOl my bad i hear ya, where can i get a list of the codes ...
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From the fault code reader you plug into the car

Then look them up here
http://wiki.ross-tech.com/wiki/index.php/Main_Page 
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you know that i meant were do i get the code list LOL

god thats alot of codes,
do i have to keep a record of all of em when i use that code reader when viewing a car : http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes
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It comes with a booklet with most of the codes

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So the device Rhyso showed me on ebay comes with codes, thats not bad then,
cheers