Code Reader OBD2 UDIAG
Read and erase fault codes in seconds. Compact, reliable and affordable - UDIAG OBD2 readers are a must-have for any discerning driver.
Why choose a UDIAG OBD2 reader?
Instant Plug & Play
Plug into your vehicle's OBD2 port and get instant diagnostics. No configuration required, up and running in seconds.
Integrated battery test
The CR720 and CR800 models include a 12V battery tester. Check the condition of your battery in addition to engine diagnostics.
Lifetime updates
All UDIAG readers benefit from free software updates for life. Stay compatible with new vehicles at no extra cost.
Optimum value for money
Reliable, durable tools at affordable prices. Uncompromising professional quality from UDIAG, for home and professional use.
Which OBD2 reader should I choose?
- ✅ Reading fault codes
- ✅ Deleting codes
- ✅ Lifetime update
- ❌ No battery test
- ✅ Reading fault codes
- ✅ Enhanced colour screen
- ✅ Lifetime update
- ❌ No battery test
- ✅ Read & delete codes
- ✅ 12V battery test
- ✅ Lifetime update
- ✅ Intuitive interface
- ✅ Read & delete codes
- ✅ Advanced battery test
- ✅ Lifetime update
- ✅ Full OBD2 functions
Frequently asked questions about OBD2 readers
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An OBD2 reader is a tool that connects to the OBD2 diagnostic socket of your vehicle (present on all vehicles since 1996) to read the engine fault codes, understand why the engine light is on, and clear these codes once the repair has been carried out.
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Yes, UDIAG code readers are compatible with all vehicles equipped with OBD2 protocol - almost all the petrol and diesel cars sold in Europe since 1996. This includes European, Asian and American brands.
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Le CR200 is the essential, compact entry-level model. The CR206 features an enhanced colour screen and improved ergonomics. The CR720 and the CR800 both add a integrated 12V battery tester - ideal for checking the condition of your battery at the same time as engine diagnostics. The CR800 offers more comprehensive OBD2 functions.
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Yes, all UDIAG readers allow you to read and delete fault codes, This turns off the engine light. Warning: if the problem that caused the code is not repaired, the light will come back on. Clearing the code does not solve the problem, it simply confirms that the repair has been successful.
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Yes. Unlike professional scanners, which require a subscription, the entire CR range (CR200, CR206, CR720, CR800) benefits from free software updates for life. This means you remain compatible with new vehicles at no extra cost.
Choosing your OBD2 code reader: complete guide
A OBD2 code reader is the most accessible and useful automotive diagnostic tool for any driver. Connected to the vehicle's OBD2 socket - fitted to all cars since 1996 - it can instantly read fault codes, understand why the engine light is on, and clear these codes after repairs.
La UDIAG CR range offers four models to suit every need. From UDIAG CR200, compact and essential for occasional use, at the UDIAG CR800, With the latest OBD2 diagnostic and advanced battery testing technology, each model has been designed to be easy to get to grips with, with no need for complex configuration.
The special feature of the CR range is its system of free updates for life. Unlike professional scanners, which require an annual subscription, your UDIAG readers remain compatible with new vehicles at no extra cost - a considerable advantage in the long term.
Officially distributed in Europe by UDIAG Europe, all UDIAG OBD2 readers are guaranteed 2 years construction and accompanied by a French-speaking technical support to support you every step of the way.
Complete your UDIAG equipment
Need to diagnose all your systems? Discover the comprehensive, multi-brand A range.
View scannersFor demanding garages, discover our X range of OE-Level platforms.
See the X → rangeBattery testers, leak detectors, inflators - everything for your workshop.
View toolsDiscover our complete guide to using an OBD2 reader and interpreting fault codes.
Read the guide →
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