obd2 app

An **OBD2 app** is a software application, usually for a smartphone or tablet, that connects to a vehicle’s **OBD‑II (On‑Board Diagnostics II)** system—typically via a Bluetooth or Wi‑Fi OBD2 adapter—to read and interpret vehicle data.

These apps are used to:
- Read and clear diagnostic trouble codes (check engine codes)
- Monitor real‑time engine and sensor data (RPM, speed, fuel efficiency, temperatures)
- Track vehicle performance and fuel economy
- Assist with vehicle maintenance and troubleshooting

OBD2 apps work with most cars manufactured from 1996 onward (in many regions) that support the OBD‑II standard.