Live OBD2 Scan

The Live OBD2 Scan tool connects to a vehicle via an OBD-II interface and decodes standard SAE J1979 PIDs to present real-time telemetry. It enables technicians and fleet operators to monitor engine RPM, vehicle speed, coolant temperature, intake air measurements, fuel trim, and emission-related data while the vehicle operates. The core logic decodes raw sensor frames into engineering units, validates timestamps, and aggregates data into a stream suitable for downstream analysis. This tool also retrieves current DTC codes and freeze-frame characteristics when available. By supporting multiple protocols and a configurable PID subset, it adapts to a wide range of makes and models and limits data bandwidth for stable connections. Real-world benefits include faster fault localization, trend analysis for maintenance planning, and data-driven tuning decisions. The tool differentiates itself with offline log export, structured data formats, and robust handling of partial data when frames are dropped, enabling reliable post-run reviews. Use cases span independent garages diagnosing misfires, fleet managers tracking emissions readiness, and developers prototyping telemetry pipelines for vehicle data.