Second that on the Harbor Freight reader. It sells under the brand name "Creader." When I plugged it into my '98 S70 GLT to read the check engine light, it reported there were no error codes to be found. A friend had the same result with his S70, too. It will clear your codes and turn off the check engine light...but a lot of good that does you when you don't know what the codes were before they were cleared.