OBD2 Bluetooth Scanner for IOS & Android

The Autohil AX4 is a compact and powerful Bluetooth 5.0 OBD2 scanner that transforms your smartphone or tablet into a professional-grade diagnostic tool. Built with an upgraded 25K80 chip for faster, more reliable readings and an on/off power switch for added control, it outperforms ordinary OBD2 Bluetooth devices. Compatible with OBD2 apps on both iOS and Android, it lets you read and clear codes, monitor real-time gauges, customise dashboards, and log trip and engine performance data.

Engine Diagnostics

  • Read and clear engine trouble codes to quickly identify issues.
  • Understand why the Check Engine Light is on before visiting a mechanic.

Custom Dashboards

  • Create personalised displays to monitor live engine data.
  • Track temperature, pressure, RPM, and other key performance gauges in real time.

Performance & Fuel Monitoring

  • View a real-time digital speedometer and live fuel economy data.
  • Log trip details, fuel usage, and driving patterns to improve efficiency.

The Autohil AX4 is a compact and powerful Bluetooth 5.0 OBD2 scanner that transforms your smartphone or tablet into a professional-grade diagnostic tool. Built with an upgraded 25K80 chip for faster, more reliable readings and an on/off power switch for added control, it outperforms ordinary OBD2 Bluetooth devices. Compatible with OBD2 apps on both iOS and Android, it lets you read and clear codes, monitor real-time gauges, customise dashboards, and log trip and engine performance data.

Engine Code Reader

ELM327 OBD2 car scanner, engine code reader. Diagnose engine trouble codes and know why CHECK ENGINE light is on and clear it.

Get engine trouble code & its' meaning right on your smartphone’s screen. Know why your engine light is on and turn it off.

  • [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.

Real-Time Performance Gauges

ELM OBD reader, monitor real-time performance and engine data, speed, temperature and many other performance gauges with OBD2 bluetooth scanner tool

Pair your AX2 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! Real-time performance data include:

OBD Performance Gauges

Engine RPM (Tachometer), Vehicle Speed, Absolute Throttle Position, Calculated Load Value, Intake Manifold Pressure (Boost/Vacuum), Timing Advance, Mass Air Flow Rate, Air-Fuel Ratio (where supported)

OBD Engine Health Gauges

Coolant Temperature, Intake Air Temperature, Oxygen Sensor Readings (O2 / Lambda), Short-Term Fuel Trim (STFT), Long-Term Fuel Trim (LTFT), Fuel Pressure, Battery Voltage & Charging System, Misfire Monitor (where supported), Evaporative Emission System Status, Catalyst Efficiency

OBD Fuel Economy Gauges

Instant Fuel Consumption (L/100km or MPG), Average Fuel Economy, Fuel Used (per trip), Trip Distance & Time, Fuel Tank Level (where supported), Range to Empty (DTE), CO₂ Emissions Estimate.

*OBDII sensor gauges are vehicle dependent.

OBD2 Bluetooth Connection

Plug the bluetooth scan tool into your vehicle’s OBD-II port and pair with an OBD2 App of your choice. The AX4 uses Bluetooth 5.0 so it does not require to pair with your phone settings. Go direct to the App and pair.

  • Recommended Apps for Android: TORQUE & TORQUE PRO, Car Scanner, ELM OBD
  • Recommended Apps for iOS: Car Scanner, DashCommand, ELM OBD
  • Free & Paid Apps Available (sold separately)

Package Includes

  • AX4 Bluetooth OBD Scanner
  • Quick Start Guide

Bluetooth OBD Scanner - AX4

  • Upgraded 25K80 Chip – Ensures fast, stable, and accurate data transfer for more reliable diagnostics
  • Bluetooth 5.0 Connectivity – Faster pairing, stronger stability, and wider range compared to older Bluetooth scanners
  • Cross-Platform Support – Works with top OBD2 apps on iOS and Android (via App Store & Google Play) - Free & Paid Apps available
  • On/Off Power Switch – Easily control power without unplugging, protecting your car battery and adding convenience
  • Read & Clear Trouble Codes – Diagnose why the Check Engine Light is on and clear codes once repairs are complete
  • Real-Time Live Data – Monitor RPM, coolant temp, throttle position, fuel trims, O2 sensors, ignition timing, and more
  • Customisable Dashboards – Build your own performance screens with gauges and parameters that matter to you
  • Trip & Fuel Logging – Track mileage, fuel usage, cost per trip, and driving efficiency
  • Compact Design – Lightweight and portable, fits in your pocket or can stay plugged into the OBD2 port
  • Vehicle Compatibility – Works with most OBD2-compliant vehicles (cars, SUVs, and light trucks from Australia, US, EU, and Asia)

Is it ELM327 OBD Scanner?

If you’ve been shopping around, you’ve probably seen countless scanners claiming to use the ELM327 v1.5 chip. The truth? Most of them are fake clones that don’t actually run on the genuine chipset. They’re slower, less reliable, and often fail to read or clear codes properly.

The AX4 is different. Built with a verified 25K80 / PICI8F25K80 control chip, it delivers faster, more accurate, and more stable diagnostics than not only cheap clones—but even many of the more expensive Bluetooth scanners on the market.

The AX4 has proven itself as the best-value OBD2 Bluetooth scanner: professional-level reliability at a price that’s still affordable. When you buy the AX4 bluetooth scanner, you’re not gambling on false claims—you’re getting a tool that’s been tested, trusted, and proven to work.

OBD2 Engine Code Readers

All engine code readers are designed to work with OBD2 protocols. This means they can read and clear engine-related trouble codes (Check Engine Light), display live engine parameters (like RPM, coolant temperature, or oxygen sensor data), and run emissions readiness checks.

What is OBD2?

OBD2 (On-Board Diagnostics II) is a universal standard introduced to help technicians and drivers diagnose issues with modern vehicles. It allows scan tools and code readers to communicate with the car’s Engine Control Unit (ECU) and retrieve information such as trouble codes, live sensor data, and emissions status.

OBD2 Compliant Cars in Australia

Our engine OBD2 code readers are compatible with vehicles that use standard OBD2/EOBD protocols. You can check if your car is covered by visiting our Australia OBD2 Compatibility List to find out if your car is covered.

Need Help Choosing?

We’re here to make sure you get the right tool. If you’re unsure about compatibility or want to know which functions are supported on your car, contact our support team for expert advice.

Technical Specifications

Upgraded 25K80 Chip for faster more reliable readings
Communication: Bluetooth 5.0
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 

Compatible OBDII Protocols

ISO 9141-2 (5 baud init, 10.4 kbaud)
ISO 14230-4 KWP (5 baud init, 10.4 kbaud)
ISO 14230-4 KWP (fast init, 10.4 kbaud)
ISO 15765-4 CAN (11 bit ID, 500 kbaud)
ISO 15765-4 CAN (29 bit ID, 500 kbaud)
ISO 15765-4 CAN (11 bit ID, 250 kbaud)
ISO 15765-4 CAN (29 bit ID, 250 kbaud)
SAE J1850 PWM (Found on many Ford vehicles)
SAE J1850 VPW (Found on many GM vehicles)

Delivery

99% of purchases are dispatched from our Melbourne warehouse within 24 hours of payment. Every parcel is shipped with Australia Post e-Parcel, complete with tracking and signature on delivery.

Need it sooner? Express shipping is also available—check if your postcode is in the Next Day Delivery network.

Returns

Shop with confidence. We offer a 30-day money back guarantee on all orders. If you’ve had a change of mind, simply return the item in re-original condition and we’ll make it right.

Warranty

All AZscanners products are backed by a 12-month warranty (unless otherwise stated). We stand by the quality of our tools and will repair or replace your item if a covered fault arises.

AZscanners Guarantee - why buy obd scanners diagnostic tools from us

Buying your scan tool should feel easy, safe, and backed by a team you can trust.

That’s why thousands of mechanics, fleets, and car owners across Australia choose AZscanners. Here’s our promise to you:

Trusted Since 2013

We’ve been Australia’s go-to supplier of premium diagnostic scan tools for over a decade. From workshops and mobile mechanics to DIY users, we’ve built our reputation on quality, reliability, and real support.

30-Day Money Back Guarantee

Changed your mind? No problem. You have 30 days to return your item in its original condition for a full refund. It’s our way of making your purchase completely risk-free.

Quality You Can Count On

Every product in our range is hand-picked for performance, compatibility, and durability. Whether you’re after a professional-grade scan tool or an easy solution for home use, we’ve got you covered.

Local Support that Cares

We don’t just sell scan tools — we support them. Our team of technicians is here to answer your questions before and after purchase, so you’re never left on your own.

Fast & Reliable Shipping

99% of orders are shipped within 24 hours (from our Melbourne warehouse) with tracking and signature included. Need it quicker? Express delivery is available.

Competitive Prices Direct to You

We keep our overheads low and source directly from manufacturers, so you get premium tools without the premium price tag.

5
33 reviews
I love the small compact size. Undetectable in my OBD2 port. So far it have performed as expected.
12 February 2025
This is a good device. Inexpensive, easy to set up and does what is supposed to do. Quality construction. The service desk is responsive and helpful. Cannot complain.
20 November 2023
Ordered a OBD2 Bluetooth Scan Tool OBD ELM327 Car Code Reader iPhone & Android Autohil AX4, contacted the boys and they recommended it, downloaded appropriate App,shows when my DPF is doing a regen, and more, thanks, great bit of gear
8 November 2023
Great little scanner Great for the price Can view way more sensors than my $2 eBay obd2 scanner
31 August 2023
Found this scanner easy to use and reasonably priced. All it takes is a little bit of time to find the app that works best for your car. The one I ended up choosing worked well on 3 different vehicles and it's worth buying the full version. Couldn't be happier
25 August 2022
Works great on my Subaru Outback 2007. Clears codes from iPhone. Comes highly recommended.
24 July 2022
The product arrived promptly. It worked as described and allowed me to delete all errors. I used the android app called "Car scanner" I recommend both
28 April 2022
Great value and links to several OBD apps. It took me some time to work out which app works best with the unit and the vehicle (a Prado 150). Happy with the outcome.
1 February 2022
Great looking product but sadly is does not connect with iPhone 6 Plus. Phone says Autohil not supported. Phone is running iOS 12.5.5 : (((((((
30 October 2021


azscanners.com.au Response
The Autohil AX4 works well with iOS Greg. The AX4 uses bleutooth 4.0 and it is not supposed to be paired in the connection settings of the device rather then needs to be paired directly in the connection settings of the preferred app. Try to complete the connection in the settings of your preferred app rather then in the settings of your phone as well as make sure that there are no other bluetooth devices connected to your iPhone when trying to connect.
great service thanks heaps
30 June 2021
Love the thing! Worked great with my iPhone. Low cost too! Highly recommended!
21 May 2021
I was very very pleased to get this AX4, and it was so easy to use. I'm so happy I can now do so much I could not do before. I would recommend this AX4 to anybody who uses Bluetooth on their apple phone. Thanks:)
18 March 2021
Excellent service. Item correct and delivered on time. Thank you
11 March 2021
has arrived, now to try to get it to talk to my phone and car ;)
5 March 2021
Excellent as described.
25 February 2021
As described. Fast delivery.
7 February 2021
Best obd2 Works perfectly
2 December 2020
Works well easy setup and links easy to android and use Torque and Dasboard apps for real time ECUstats
1 October 2020
Great device
14 January 2020
Exactly as described. Happy
27 December 2019
Just Awesome
5 October 2019
Works well easy setup and links easy to android and use Torque and Dasboard apps for real time ECUstats
27 June 2019
Great value, fast postage, thanks heaps!
3 May 2019
As described great product, fast post, 5 star.
26 April 2019
All good, unit works well.
9 April 2019
Excellent seller, extremely quick delivery, excellent customer service.
13 March 2019
Just perfect thanks
13 March 2019
Quality product, very fast delivery highly recommend.
22 February 2019
All good. Speedy delivery. Thanks. Very helpful with sorting out some issues.
24 January 2019
Wonderful communication, highly recommended, would buy again!!
24 January 2019
Works well with DashCommand app on S9+ Android phone. I have tested it on 2015 Hyundai i30 1.6ltr and a wide variety of gauges operated well. I will be trialing it on 2012 3.8ltr Crysler 300c soon and I expect that results will be similar. It's most challenging test will be on a 2007 Mini Cooper S with Fuel Flow fault codes to trace.
18 January 2019
The scan tool works well with the torque pro app on android, it also gives me auto trans temperature.
11 January 2019
Easy install, works a treat. Love it.
8 January 2019

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