Car Scanner ELM OBD2

Contains adsIn-app purchases
352K reviews
Content rating
Everyone
10M+
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Content rating
Everyone
In-App Purchases
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About this app

See what your car is doing in realtime, get OBD fault codes, car performance, sensor data and more!
Car Scanner is a vehicle / car performance / trip computer / diagnostics tool and scanner that uses an OBD II Wi-Fi or Bluetooth adapter to connect to your OBD2 engine management / ECU.
Car Scanner gives you a bunch of unique features:
1) Layout your own dashboard with the gauges and charts you want!
2) Add custom (extended PIDs) and get information, that was hidden from you by car manufacturer!
3) It can also show and reset a DTC fault code like a scantool. Car Scanner includes a huge database of DTC codes descriptions.
4) Car Scanner allows you to read free-frames (sensors state when DTC is saved).
5) Now with Mode 06 - you can get ECU self-monitoring test results. Helps you fix your car and helps keep repair costs down!
6) Check if your car is ready for emission tests.
7) Check all of the sensors at one screen
8) Car Scanner works with any vehicle that uses the OBD 2 standard (most vehicles built after 2000, but can work for vehicles as far back as 1996, check carscanner.info for more details).
9) Car Scanner includes a lot of connection profiles, that gives you some extra features for Toyota, Mitsubishi, GM, Opel, Vauxhal, Chevrolet, Nissan, Infinity, Renault, Hyundai, Kia, Mazda, Ford, Subaru, Dacia, Volkswagen, Skoda, Seat, Audi and others.
10) Car Scanner dashboard includes a HUD mode, that you can use to project data to your windshield.
11) Car Scanner provides a tool for very accurate acceleration measurments (0-60, 0-100, etc.)
12) Car Scanner can be used as a trip computer and can show you fuel consumption statistics!
13) Car Scanner supports coding (changing hidden settings of your car) for this cars:
- VAG group (Volkswagen, Audi, Skoda, Seat), built on the MQB, PQ26 and MLB-EVO platforms. Some exclusive functions you would find only in Car Scanner: Video in motion (VIM), Mirrorlink in motion (MIM), Traffic Jam Assist activation, Drive mode profiles editor (compatibility may depend on your car modules and firmware versions), Ambient lights configuration, etc.;
- Toyota/Lexus cars with CAN bus (almost all cars since 2008 up to nowadays);
- Some of Renault/Dacia (compatibility may depend on your car modules and firmware versions);
- Several service functions available for other cars.
14) And one more thing - Car Scanner provides the widest variety of features for FREE across the Play Market.

The app requires a Wi-Fi or Bluetooth or Bluetooth 4.0 (Bluetooth LE) OBD2 ELM327 compatible adapter (device) to work. ELM327 devices plugs into the diagnostics socket in the car and gives your phone access to car diagnostics.
Recommended adapters brands: OBDLink, Kiwi 3, V-Gate, Carista, LELink, Veepeak.
If you buy one of the cheap china OBD2 ELM327 adapters from ebay / amazon, then make sure it’s not marked as v.2.1. This adapters are supported, but they have lot’s of bugs.

PLEASE NOTE: Vehicle ECUs vary in the amount of sensors supported. This app can’t show you something, that is not provided by your car.

Attention "bad" adapters! We faced the problem, that some adapters (often cheep Chinese clones), can’t connect to the smartphone or the car. Some of them can even make your car engine work unstable, often lost connection, increase time lag when reading data.
So, we recommend you to use genuine ELM327 or recommended adapter brands.
Trip computer+car diagnostic tool with widest variety of features and dashboard!
Updated on
Jul 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

340K reviews
J G
May 26, 2025
I'm a Single lady and independent person, but not very car savvy. I can do minor stuff, but I leave the big stuff to the professionals. this app is AMAZING! I have diagnosed a few things and told my mechanic exactly what was wrong. it was correct. This app is so easy to use! And free! I was intimidated at first, being almost completely clueless, but directions were clear and I get all the info I need. my fav part is where it links you to articles and videos relating to the repairs needed!
561 people found this review helpful
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Anony mous
June 10, 2026
Great software. I found another use for it, other than diagnostics. I recycled an older cell phone and loaded Car Scanner on it. I set up a dashboard with different engine checks and used it to have real time feedback from the OBD. If you like monitoring the exact temperature of your coolant, for instance, you can create a dashboard and add coolant temperature to it, as well as oil temp, or anything you want to monitor. You can even set up alerts so that you know right away if there is a problem
13 people found this review helpful
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Lloyd Hutchinson
June 14, 2026
I've had an excellent experience with this OBD 2 app. It works perfectly across many vehicles. I'm a do it yourself mechanic and this has helped me with about a dozen cars over the years. I almost never give money to any mobile app, but this one is so worth it to pay for the pro version. I love that it works offline, is easy to use, and gets frequent updates. Also, the readout of the vehicles various sensors has been exceptionally useful!
6 people found this review helpful
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What’s new

Updated connection profiles database.
Added USB ELM327 device support.
Bugs fixed.