Sealey autel eobd code readers sealey al439 this autel eobd code reader from sealey is the ultimate automotive analyser that combines a multimeter scope starter test and eobd code reader fast and easy access to any vehicles eobd diagnostic codes establishing cause of illuminated engine check light mil features built in data library with lookup functions clear concise dtc generic definitions displayed on screen can enabled tool retrieves generic p0 p2 and p3 and u0 codes for engine