OBD2 Car Scanner - EOBD Facile

Review by eFreeware

OBD2 Car Scanner - EOBD Facile is a free diagnostic app from Outils OBD Facile. It reads the fault codes your car stores, clears the check engine light and shows live engine data, all through a phone connected to an ELM327 adapter. With more than 10 million installs and a 4.5 average from over 92,000 ratings, it is one of the better-established options in this category.

The main reason to consider it is straightforward: it lets you see what your car is complaining about before you commit to a repair bill. Instead of guessing why a warning light came on, you plug in an adapter, run a scan and get a code with a plain-language definition. The app is pitched as a lighter, friendlier alternative to the bigger diagnostic tools, and that positioning is what shapes everything else about it.

It is not a standalone tool, though. Nothing happens until you have an ELM327 Bluetooth or WiFi adapter plugged into the OBD port, and the quality of that adapter matters. The developer is unusually direct about this, warning that cheap clones often misbehave and offering a built-in test so you can check a scanner before trusting its readings. Keep that in mind as the real starting cost.

Reading and clearing fault codes

The headline job is code reading. The app pulls diagnostic trouble codes from the engine and transmission, then matches them against a database of over 15,000 definitions. That includes manufacturer-specific codes for brands such as BMW, Audi, Volkswagen, Ford, Mercedes, Renault, Peugeot, Fiat, Opel, Kia, Nissan, Toyota, Volvo, Subaru, Jeep and Lexus, which is where generic readers tend to fall short.

Clearing codes is a single action, and the check engine light can be reset from the app. I would treat that as a diagnostic convenience rather than a fix: erasing a code tells you whether the light returns, but the underlying fault is still whatever the car reported. For someone chasing an intermittent warning before a inspection, that alone can be worth the install.

There is also a VIN decoder that identifies the vehicle automatically, plus advanced sensor coherence tests for checking whether readings from related sensors agree with each other. Those are the kinds of tools that separate a serious diagnostic app from a simple code reader, and they suggest the developer expects users who want to go a step past reading a number off the screen.

Live data, logging and reports

Beyond codes, the app streams live sensor data: engine RPM, vehicle speed, ignition timing, coolant temperature, air intake, fuel pressure, engine torque, EGR and DPF status, along with more than 40 additional engine parameters. Watching those values in real time is how you catch a problem developing rather than waiting for a warning light to confirm it.

Sessions can be recorded and exported to Windows or Mac for closer analysis, and the app can generate PDF diagnostic reports. It also records trips and measures acceleration, with 0–60 mph and 0–100 km/h timing. That combination makes it useful for documenting a fault for a mechanic, or for keeping a record of how the car behaves over time.

The developer lists unlimited sensor recording and shareable professional PDF reports as part of the PLUS version, alongside manufacturer-specific codes, complete VIN decoding and the advanced sensor tests. The app is free to download with no ads, but it does offer in-app purchases, so expect some of the deeper functionality to sit behind that upgrade.

What you need before it works

The requirements are specific and worth checking first. You need an ELM327 Bluetooth or WiFi adapter, ideally a quality one; klavkarr, Vgate and Veepeak are examples of standard adapters that work. The app can test an adapter's quality, which is useful if you already own a cheap one and want to know whether it is the source of a problem.

Your car also has to be OBD-II compliant. The developer puts gasoline vehicles from 2001 onward, diesel from 2004 and commercial vehicles from 2007 in that group, with a community-verified compatibility database on the developer's website. If your car predates those years, the app has nothing to talk to.

Cost is two-part: the app itself is free, but the adapter is a separate purchase, and the PLUS version adds in-app purchases on top. There is a companion app called "Where is my OBD2 port?" for locating the port if you cannot find it, which is a small but telling detail about how fiddly first-time setup can be.

Getting useful results from a scan

The sensible approach is to scan, read the definition, and then decide whether to clear. If a code keeps returning after you reset it, the fault is active and worth investigating properly. If it stays away, you have learned something about an intermittent issue. Either way, the code plus the definition gives you language to use with a mechanic.

Live data rewards a little patience. Watching coolant temperature, fuel pressure or EGR values while the engine runs is more informative than a single snapshot, and the recording and export features exist precisely so you can look at a session afterward rather than trying to read numbers in the moment. The PDF reports are the natural end point if you want to hand evidence to someone else.

The adapter test is worth running early. If readings look erratic or a scan fails, checking the adapter first saves a lot of confusion, since the developer explicitly warns that many low-cost ELM327 units do not perform properly. The recent update focused on improved Italian and German translations, so the app is still being maintained, though that particular release is a modest one.

Where it makes sense and where it does not

This is a good fit for a driver who already has an ELM327 adapter, or who is willing to buy one, and wants to know what a warning light means without paying for a diagnostic session. It also suits someone who likes watching live engine data and keeping records of trips and sensor sessions. The learning curve is mostly about the adapter and the OBD port, not the app itself.

It is less compelling for anyone who wants a self-contained tool that works without extra hardware, or who expects the free download to include everything the developer advertises. The PLUS version is where manufacturer-specific codes, unlimited recording and shareable reports live, and the adapter is a prerequisite regardless of which version you use.

For a free app with a long history and a large user base, the value proposition is clear enough: a low-cost way to read your car's own diagnostics. The catch is that the cost is not zero once you factor in the hardware, and the depth of the experience depends on which version you settle on.

A practical pick for reading your own car

I would recommend OBD2 Car Scanner - EOBD Facile to drivers who want to understand their car's fault codes and live data without a workshop visit, and who are prepared to buy a decent ELM327 adapter. The code database, live parameters and reporting features give it more depth than a basic reader, and the adapter test is a genuinely useful safeguard against faulty hardware.

If you want a diagnostic app that needs nothing else, or if you would rather not pay for an upgrade to reach the manufacturer-specific codes and unlimited recording, this one will feel incomplete. For everyone else, it is a well-established, ad-free starting point for taking a more informed interest in what your car is telling you.

What's new in version 3.89.1198

3.89.1198 - Improved Italian and German translations