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- Piston - OBD2 Car Scanner Vs. ScanMaster for ELM327 OBD-2
Piston - OBD2 Car Scanner vs ScanMaster for ELM327 OBD-2 Usage & Stats
With Piston your car’s diagnostic information is at your fingertips.
Is the Check Engine Light (MIL) on? Use Piston to turn your mobile device into a car scanner and read the Diagnostic Trouble Codes (DTCs) related to the problem as well as the Freeze Frame data. This will help you identify and fix the issue.
You will need an ELM 327 based adapter, either Bluetooth or WiFi, which you connect to the OBD2 socket in your vehicle. Piston will guide you through the connection process. You can access the instructions from the Home page after the first installation or from the Settings at any time.
With Piston you can:
• Read and clear Diagnostic Trouble Codes (DTCs) defined by the OBD2 standard
• Look into Freeze Frame data (a snapshot of the data from sensors at the time the ECU detected a malfunction)
• Access data from sensors in real-time
• Check status of Readiness Monitors (monitor emission control devices)
• Store the DTCs you read in a local history
• Login and keep the DTCs you read in the cloud
• Access the charts of the sensors readouts
• Export real-time data from sensors to a file
• Check the VIN number of your car
• Examine the ECUs details, like the OBD protocol or PIDs number
Some of the above are Premium Features and require a single in-app purchase that will unlock all of them. No subscriptions!
This application, in order to become a car scanner, requires a separate ELM327 based device, either Bluetooth or WiFi. Piston is compatible with OBD-II (known also as OBDII or OBD2) and EOBD standards.
All the vehicles sold in the USA from 1996 are required to support the OBD2 standard.
In the European Union, the EOBD was mandatory for petrol engined vehicles starting from 2001 and for diesel vehicles from 2004. For Australia and New Zealand OBD2 is required for all petrol cars made from 2006 and diesel cars made from 2007.
Important: This application can only access the data your vehicle supports and provides via the OBD2 standard.
If you have any questions or suggestions you can contact us at support@piston.app.
- Google Play Store
- Free
- Auto & Vehicles
Store Rank
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ScanMaster Lite is an application for vehicle diagnostics to OBD-2/EOBD standards. It "transforms" your Android smartphone or tablet together with an ELM327 diagnostic interface to a vehicle diagnostic device. Many important OBD-2 functions are despite "Lite" available without restriction. Only the number of parameters and error codes are limited compared to the Pro version. The paid Pro version with even more features can be purchased via In-App Billing function.
The following ELM327 and compatible OBD2 interfaces are supported:
UniCarScan UCSI-2000/2100
APOS BT OBD 327
OBDLink MX/MX+
OBDLink LX
OBDLink Bluetooth and WiFI
ELM327 Bluetooth and WiFi
Pearl Lescars Bluetooth and WiFi
The interfaces can be purchased on our websites https://www.wgsoft.de/shop/ or https://www.obd-2.de/shop/ if required.
Everything completely in German and English. In the graphical representation of data, there are "pause" function. In this mode, the recorded data can be scrolled and zoomed by gesture.
We would greatly appreciate the feedback on the app. Please send us an email about your experiences, opinions or suggestions.
- Google Play Store
- Free
- Communication
Store Rank
- -
Piston - OBD2 Car Scanner vs. ScanMaster for ELM327 OBD-2 ranking comparison
Compare Piston - OBD2 Car Scanner ranking trend in the past 28 days vs. ScanMaster for ELM327 OBD-2
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Piston - OBD2 Car Scanner vs. ScanMaster for ELM327 OBD-2 ranking by country comparison
Compare Piston - OBD2 Car Scanner ranking trend in the past 28 days vs. ScanMaster for ELM327 OBD-2
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February 27, 2026