OBD2 Scanner Diagnostic Tool, ABS SRS Airbag Car Scanner, Engine Check Car Code Reader, Automotive Diagnostic Scanner The device scans car problems and tells you exactly where the problem is based on codes, and then you can clear the error codes and the problem will be solved. There are two cases here: If the problem is programming or definition, the problem will be solved and disappear, and it usually occurs after disconnecting the battery. And if the problem is with a physical part, the problem does not go away or may go away and come back after a while.