https://toorun.dev/tags/obd2/Recent content in obd2 on toorun.devHugo -- gohugo.ioen-usWed, 12 Aug 2026 10:00:00 +0000https://toorun.dev/posts/obd2-protocol-explained/Wed, 12 Aug 2026 10:00:00 +0000https://toorun.dev/posts/obd2-protocol-explained/What is OBD2? On-Board Diagnostics 2 (OBD2) is a standardized automotive diagnostic protocol that allows external devices to query and monitor the status of a vehicle’s engine control unit (ECU) and other subsystems. Every vehicle sold in the United States since 1996, and in the European Union since 2001, must have an OBD2 interface. Historical Context 1980s: Original OBD (OBD1) introduced with limited diagnostics and proprietary implementations per manufacturer 1996: U.