Autohil™ AX4 is a simple and easy to use OBDII Bluetooth car scanner that can help you connect to your vehicle's data using your iOS and Android devices. Pair your AX4 Bluetooth Scan Tool to your preferred performance App and see what your car is doing in real-time: get OBD2 fault codes, car performance gauges, live sensor data and more! 

 Diagnose engine trouble codes and know why CHECK ENGINE light is on.

 Customise real-time fuel economy and performance gauges and log engine, trip and fuel data.

 Connect to heaps of OBDII Apps available on Google Store giving you more choices on how to use.

 Simply connect the scanner to OBDII port and pair with your preferred App(s) or Software.


Engine Live Data

Depending on the app and the vehicle's make and model you can customise dashboards on your Android devices to display various parameters in real-time gauges or table format. 

Engine RPM

Calculated Load Value

Coolant Temperature

Fuel System Status

Vehicle Speed

Short Term Fuel Trims

Long Term Fuel Trims

Trim Intake Manifold

Pressure Timing Advance

Air Intake Temperature

Air Flow Rate (MAF)

Absolute Throttle Position

Oxygen Sensor Voltages

ECU Voltage

Fuel System status

Fuel Pressure

Fuel Consumption

Trip data


OBD Type

Ambient Air Temperature

Fuel Level

Evaporative purge

Intake pressure (MAP)

Engine Timing

Engine Load

and More

*OBDII sensor gauges are vehicle dependent. 


OBD2 Code Reader

Get engine trouble codes & their meanings right on your smartphone’s screen. Know why your engine light is on and turn it off after repair!

➤ [Reads & Clear DTCs]: Read Engine diagnostic trouble codes DTC and provide both the code and its' meaning and clear them

➤ [Engine Live Data]: Customise and monitor real-time engine parameters.

➤ [Freeze Frame Data]: Recorded system parameters values at the time when engine malfunction first occurred

➤ [Readiness test]: Test and check status of engine emission control systems

➤ [VIN]: Read vehicle info such as Vehicle Identification Number VIN, Calibration IDs CALID and Calibration Verification Number CVN

*Most Apps can only diagnose (read & clear) generic engine fault codes.


Easy Setup

The Autohil AX4 is a plug and play scan tool that retrieves information from your car's computer, and transmits to your Android devices using bluetooth connection. 

➤ Plug AX2 scanner into the OBDII/CAN port

➤ Go straight to App settings, set to Bluetooth and use. 

The scanners will automatically pair with the App. Do not try to pair from phone settings!



Autohil AX4 is compatible with all cars using compatible OBDII protocol. 



Autohil AX4 works with most Apps available on Google Store. Apps can have different vehicle coverage, functions and designs. We recommend to search for a suitable App and try the free version, if you're happy with it then go for the paid full version. 

  • Upgraded 25K80 Chip for faster more reliable readings
  • Communication: Bluetooth 4.0
  • Control Chip: PICI8F25K80
  • Supported Systems: iOS / Android / Windows
  • Operating Voltage: 9-16V
  • Working current:50mA
  • Standby current: 45mAH
  • Power Consumption: 0.75 Watts
  • Operating Temperature: -15 to 100
  • Dimensions: Width 4.4cm Length 3cm Height 2.5cm

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