Amazon has the Autel MaxiScan MS300 OBD-II Code Reader for $19 with free shipping on $25+. Compatible with 1996 and later OBD II-compliant vehicles, reads and displays Diagnostic Trouble Codes (DTCs). Now you'll know whether you need a new engine or you're just low on wiper fluid.
got one, works good.
easily worth it in case you ever get a check engine light you can know what it means without going to a mechanic.