School Bus Tools, created by TPX Power Source, is a company that was founded in 2009 to provide high quality Diagnostic Tools that deliver quality, innovation, and outstanding value. The School Bus manufactured today is very advanced and require technical skill and the School Bus diagnostic tools to get the job done. Engine Diagnostic Software, Scanners, Code Readers, and Electrical System Analyzers are the tools of professional mechanics. Our goal is to provide a cost-effective, accurate, OEM-level diagnostic tool that delivers extensive coverage for all applications.