What are OBD (Codes)?

OBD Codes refer to the diagnostic trouble codes (DTC codes) generated by the equipment’s or vehicle’s on-board diagnostic system (or OBD system). These diagnostic codes provide fault identification and malfunction diagnostic information for repair technicians. DTC codes generated by the OBD system show where an error or malfunction has occurred and are not the same as a “check engine light”, which only shows the presence of a potential issue.