Live OBD PID Data
Read real-time engine data with live charts — RPM, speed, coolant temperature, MAF, load and battery voltage, with automatic battery, temperature and load analysis.
✔ 100% free
Mobile friendly
⚡ No account
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See your engine live
Poll common OBD-II PIDs and watch them update in real time on charts. The tool analyzes battery/alternator voltage, engine temperature and load so you can spot problems as they happen.
- Live RPM, speed, coolant, MAF, load and battery
- SVG line charts for every channel
- Automatic battery, temperature and load analysis
- Demo mode works without hardware
FAQ
Demo mode simulates live data so you can explore. For real readings, use the OBD live scanner tool with a Bluetooth LE ELM327 adapter.
At rest a healthy battery reads ~12.6 V. Under 13.2 V with the engine running suggests a charging problem.
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