Seeing the check engine light pop up on your dashboard can be stressful, but the good news is, it doesn’t always mean an expensive repair. With the right engine light checker (also called an OBD2 scanner), you can quickly find out what’s going on before heading to the mechanic.

These handy devices plug into your car and give you a code that explains why the light came on. Some even connect to your phone with an app, making it super simple to understand the problem.

To help you choose, we’ve ranked the 10 best engine light checkers for 2025, breaking down key features, accuracy, ease of use, and pricing. 

 

 

1. ELM327 Wifi OBD2 Scanner for IOS and Android V2.1

Best for: Budget-conscious DIYers and beginner mechanics

The ELM327 Wifi OBD2 Scanner is a fan favourite for its simplicity, wide compatibility, and unbeatable price. It’s a wireless check engine reader that works with both iPhones and Android devices. Simply plug it into your vehicle’s 16-pin OBD2 port and then connect your device (phone, tablet, or laptop) Open your app such as Torque, Car Scanner, or ScanMaster to read diagnostic trouble codes (both generic and manufacturer-specific), view live sensor data, and clear the check-engine light.

Key Features:

• Supports all OBD2 protocols

• Works with iOS, Android, and Windows

• Reads and clears engine DTCs

• Displays real-time engine data (RPM, speed, fuel trims, etc.)

• Wi‑Fi models can maintain stable connections over a greater distance compared with Bluetooth

• Supports popular OBD apps like Torque, Car Scanner, OBD Auto Doctor, ScanMaster, and more.

This scanner is small but mighty, with access to 3000+ code definitions. It's the perfect first tool to understand what your vehicle is telling you, without rushing to the mechanic every time. 

 

2. Topdon ArtiLink500 OBD2 Diagnostic Scan Tool

Best for: DIY enthusiasts and home mechanics

The TOPDON ArtiLink500 is a robust handheld scanner offering a wide array of professional features. With support for multiple languages and one-click I/M readiness checks, it’s ideal for workshops aiming for quick turnaround and emission compliance.

Key Features:

• Full OBD2 diagnostics (CAN, ISO9141, J1859, etc.)

• Read and Clear Engine Fault Codes and see Fault Definitions

• Live Data, Freeze-Frame Data, O2 & EVAP Testing

• Plug-and-play with no battery needed

• Free lifetime updates via USB 

A must have tool for any diagnostic DIY'er, this engine light checker features a clear 2.8-inch colour screen and works across a wide range of vehicles, including most Australian models manufactured from 2006 onwards.

 

3. Veepeak OBD2 Bluetooth Scan Tool

Best for: Smartphone-savvy DIYers and everyday drivers

The Veepeak OBD2 Bluetooth Scanner is a flexible and budget-friendly engine light checker that connects to your iOS or Android device. Just plug it into your vehicle and pair with a supported app like OBD Fusion or Torque to start diagnosing issues immediately.

Key Features:

• Reads & clears generic and manufacturer-specific codes

• Real-time data graphing, sensor monitoring & dashboard customisation

• Compatible with most petrol vehicles from 2006+ and diesel from 2007+

• Supports all five OBD-II protocols

• Includes carrying case and 12-month warranty

This is a solid pick for users who prefer Bluetooth scanning on a mobile app platform without breaking the bank.

 

4. Foxwell NT301 OBD2 Live Data Code Reader

Best for: DIYers needing live data and freeze-frame insights

The Foxwell NT301 is a trusted check engine reader that brings accuracy and advanced diagnostics to your fingertips. With a vibrant colour screen and emissions-readiness lights, this device gives real-time system data that helps catch intermittent issues fast.

Key Features:

• Full OBD2 compliance with DTC lookup and emissions test LED indicators

• Reads, clears codes, and resets monitors

• Displays live O2 sensor and on-board monitor test data

• Supports freeze frame data, live graphing & playback

• One-click software updates and PC data printing

It’s ideal for DIYers who want a reliable handheld tool with rich functionality.

 

5. Launch CR319 OBD2 Car Diagnostic Scan Tool

Best for: Beginners and everyday drivers

Designed for simplicity and value, the Launch CR319 supports full OBD2 diagnostics with a plug-and-play experience. It reads, clears codes, and offers a built-in DTC library for quick error translation.

Key Features:

• Supports all 10 OBD2 test modes, including freeze frame, I/M readiness & live data

• DTC lookup library and multilingual support (7 languages)

• Compatible with OBD2 compliant vehicles 

• Compact and independent, no extra battery or app required

Perfect for first-time users or mechanics wanting a fast and affordable scan tool.

 

6. Ancel AD410 OBD2 Scanner Professional Diagnostic Tool

Best for: DIYers, Smog check prep and vehicle emission diagnostics

The ANCEL AD410 is a well-rounded diagnostic equipment option that covers all basic and advanced OBD2 features. It’s a go-to for preparing vehicles for inspection and viewing live stream data.

Key Features:

• Supports all OBD2 protocols, including CAN & ISO9141

• DTC definitions, freeze frame, EVAP system, and O2 sensor test

• Live data stream graphing with replay/record functions

• One-key I/M readiness check for emission tests

• Built-in error code library

A great addition to any workshop aiming for accuracy without unnecessary complexity.

 

7. Launch CR629 OBD2 Scanner with ABS/SRS Diagnosis

Best for: DIYers servicing multiple systems beyond the engine

The Launch CR629 goes beyond basic engine diagnostics by supporting ABS, SRS, and essential service functions like Oil and BMS resets. It's a multi-system scanner offering active tests and deep data access.

Key Features:

• Read/clear engine, ABS, and airbag codes

• View live data across multiple systems

• Perform Oil, BMS, and Steering Angle Resets

• Lifetime free updates & broad vehicle coverage

• Works with most Australian, US, and European cars

Ideal for techs needing extra system diagnostics and active test capabilities in one device.

 

8. Autel Diaglink MD802 Full-System OBD2 Scanner

Best for: DIYers working on specific brands who need full-system access

The Autel Diaglink MD802 offers comprehensive diagnostics on one brand of your choice (with options to add more). It covers all vehicle modules and includes common service functions.

Key Features:

• Full diagnostics across engine, ABS, SRS, TPMS & more

• Includes EPB reset, oil reset, and O2 monitoring

• Free lifetime updates; brand expansion available at low cost

• Multilingual menu and wide brand compatibility

A smart choice for DIYers focused on a specific brand or enthusiast households with multiple vehicles from the same manufacturer.

 

9. Ancel AS100 OBD2 Diagnostic Scan Tool

Best for: Beginners seeking a no-fuss tool

The ANCEL AS100 is compact and efficient, offering essential OBD2 functionality in an easy-to-use format. It quickly reads and clears engine codes while offering live data and readiness checks.

Key Features:

• Read/clear codes and reset MIL

• Live data with graphing & freeze frame

• I/M readiness and O2 sensor checks

• Retrieves VIN, CID, and CVN

If you need a fast, reliable engine light checker with no setup hassle, the AS100 is a solid pick.

 

10. Launch X431 CRP123X V2.0 Diagnostic Scan Tool

Best for: Advanced DIYers or workshops needing multi-system access

The Launch CRP123X is an Android-based scanner designed for modern diagnostics. With lifetime updates, wide compatibility, and support for ABS, SRS, and transmission systems, it’s a professional tool with user-friendly design.

Key Features:

• Diagnose engine, ABS, transmission & airbag systems

• Supports Oil, Throttle, SAS, BMS, and DPF resets

• AutoVIN vehicle identification and DTC lookup

• 5” touchscreen with WiFi & Android OS

• Compatible with OBD2 compliant vehicles, including AU Holden and Ford

This is one of the most comprehensive diagnostic tools available at a consumer-friendly price point.

 

Check out our top selling check engine light readers.

 

Additional Tips for Choosing the Right Engine Light Checker

✅ Understand Your Needs:
Not every mechanic or car owner needs a high-end multi-system scanner. If you’re just getting started or mainly checking engine fault codes, reliable entry-level tools like the Veepeak Bluetooth Scanner or ANCEL AS100 provide everything you need at a great value. More advanced users or workshops may prefer models like the Launch CRP123X or Autel MD802 for deeper diagnostics across multiple systems.

✅ Match the Tool to Your Workflow:
Do you prefer using your smartphone or tablet for diagnostics? Scanners such as the ELM327 and Veepeak are perfect for tech-savvy users who enjoy app-based flexibility. Prefer something you can plug in and start using immediately? Handheld tools like the TOPDON ArtiLink500, Foxwell NT301, or Launch CR319 are fantastic for quick, plug-and-play diagnostics.

✅ Check Vehicle Compatibility:
Most OBD2 diagnostic equipment will work with petrol vehicles manufactured from 2006 onwards and diesel from 2007 in Australia. That said, always double-check compatibility—especially if you're servicing older or less common models. Some tools like the Launch CR629 and CRP123X even support more advanced systems like ABS, SRS, and Transmission diagnostics, which can be a huge plus for workshop use.

✅ Choose Trusted Suppliers and Brands:
Quality matters when it comes to scan tools. Every product we feature has been selected for its performance, reliability, and value. Choosing a scanner from a trusted supplier like Premium Diagnostic Equipment ensures you get not just the tool—but also backup support and guidance if you need it.

 

Why the Right Engine Light Checker Matters

Whether you're a mobile mechanic, workshop technician, or passionate car enthusiast, the right engine light checker saves time, reduces guesswork, and empowers you to make smarter decisions when diagnosing vehicles. From ultra-portable scanners like the ANCEL AD410 to professional-grade tools like the Launch CRP123X, this year’s top tools combine power, precision, and usability.

The best part? You don’t have to overspend to get a great result. With options at every budget level, you can confidently choose a scanner that meets your needs today—and grows with you into tomorrow.

 

Check out our top selling check engine light readers.