If your check engine light has come on, an OBD2 scanner is the fastest way to find out what’s wrong — without paying a garage just to plug in their diagnostic equipment. Whether you’re a professional mechanic or a DIY enthusiast, owning one of these tools pays for itself the first time you use it.
What is an OBD2 Scanner?
OBD2 (On-Board Diagnostics) scanners connect to a port found on all cars made after 2001 and read the fault codes your vehicle’s computer generates. Some simply read and clear codes. Others offer live data, battery health checks, and full system diagnostics.
Our Top Picks
Best Budget Pick — Vgate iCar Pro Bluetooth OBD2
Perfect for DIYers who just want to read and clear engine codes. Works with free apps like Torque Pro on Android. Around £20–£30 on Amazon.
Best Mid-Range — Autel AL519
A step up with a colour screen, live data stream, and freeze frame data. No app or phone required. Popular with mobile mechanics and independent garages. Around £50–£70.
Best Professional — Launch X431 CRP129E
Full system scanner covering engine, ABS, SRS and transmission. Reads codes across all four systems and provides service reset functions. £260.
What to Look For
Bluetooth vs wired — Bluetooth is more convenient but wired is more reliable for professional use
App-based vs standalone — standalone units don’t rely on your phone battery
Coverage — make sure it covers your vehicle makes, especially if you work on European cars
Verdict
For most home mechanics, the Vgate iCar Pro is all you need. If you’re working on cars professionally, invest in the Autel or Launch — you’ll recover the cost within a week.
