WiFi OBDII ELM327 OBD2 Auto Scanner

Turn your smartphone, tablet, or PC into a powerful car diagnostic tool! This WiFi OBDII ELM327 Scanner connects wirelessly to your iPhone, Android, or Windows device to scan and diagnose your car in real time.

The WiFi OBDII ELM327 scanner connects to your car’s ECU (Engine Control Unit) through the OBD-II port (the 16-pin diagnostic port found under the dashboard in most cars made after 1996). Here’s how the connection works:

Physical Plug-in

You plug the OBDII scanner into the car’s OBD-II port.

The scanner makes a direct electrical connection to the car’s ECU via standard OBD-II communication protocols (like ISO, CAN, J1850, etc.).

Data Reading

The scanner uses the ELM327 chip to translate ECU signals (engine, transmission, sensors, etc.) into readable digital data.

This data includes fault codes, live engine performance stats, and sensor readings.

WiFi Transmission

Instead of using Bluetooth, this device creates its own WiFi hotspot.

Your phone, tablet, or PC connects to that hotspot just like connecting to any WiFi network.

App/Software Connection

Once connected via WiFi, you open a compatible OBD app (like Torque, Car Scanner, OBD Auto Doctor, etc.).

The app communicates with the scanner over WiFi, which in turn relays requests to the ECU and sends back diagnostic data.

Here are some of the best free apps you can use with your WiFi OBDII ELM327 scanner on different platforms:

???? For Android

Torque Lite (OBD2 & Car)

Most popular free OBD app.

Reads fault codes, clears check engine light, shows live sensor data.

Easy interface.

Paid version (Torque Pro) adds advanced features.

Car Scanner ELM OBD2

Works very well with WiFi scanners.

Customizable dashboards with live data.

Can run readiness tests for emissions.

OBD Auto Doctor (Free version)

Reads/clears codes and shows real-time engine data.

Has a PC version too.

???? For iPhone (iOS)

Car Scanner ELM OBD2

One of the best free iOS apps.

Works smoothly with WiFi OBD devices.

Great dashboard with real-time gauges.

OBD Auto Doctor (Lite)

Supports basic diagnostics and clearing of engine codes.

User-friendly interface for beginners.

InCarDoc FREE

Live data display.

Logs and stores driving statistics.

Paid upgrade unlocks advanced diagnostics.

???? For Windows PC

ScanMaster-ELM (Demo version)

Professional-grade diagnostic tool.

Free demo gives access to basic OBD-II functions.

OBD Auto Doctor (Free Desktop version)

Works on Windows, macOS, and Linux.

Reads/clears fault codes, shows live data.