CarSys - OBD2 ELM327 Scanner3.0 - Google Play
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Publisher Description
Read & clear OBD2 codes, freeze frame and live data with ELM327 Bluetooth/WiFi
CarSys turns your Android phone into an OBD2 diagnostic tool when paired with an ELM327 Bluetooth or WiFi adapter. It talks directly to the engine ECU using the SAE J1979 standard, so you know why the Check Engine light is on before you visit the workshop.
🔧 TROUBLE CODES (DTC)
• Read stored (Mode $03), pending (Mode $07) and permanent codes (Mode $0A, CAN vehicles)
• Freeze frame (Mode $02): sensor values captured when the fault was set, shown inside each code card
• Clear codes and turn off the MIL (Mode $04), with confirmation from the ECU
• Searchable SAE generic code library (P, B, C, U) with category filters
📊 LIVE DATA (Mode $01)
• Auto-detects supported PIDs: engine RPM, vehicle speed, coolant temperature, engine load, fuel trims, MAP, MAF, timing advance, throttle position, oxygen sensors and more
• Gauge Dashboard: analog and digital gauges, MIN / AVG / MAX statistics, full-screen mode
• Graph Dashboard: real-time multi-PID charts, separated or combined
• Metric or Imperial units (°C/°F, km/h/mph, kPa/psi)
✅ READINESS & MONITORS
• I/M Readiness: monitor status (misfire, fuel system, catalyst, EVAP, O2 sensors, EGR…), DTC count and MIL status – useful before an emissions inspection
• O2 Sensor Monitor (Mode $05, non-CAN vehicles)
• On-Board Monitor (Mode $06): test results with min/max limits
• Component Test (Mode $08): request the EVAP system leak test where supported
🚗 VEHICLE INFORMATION (Mode $09)
• VIN, ECU name, Calibration IDs, CVNs, In-use Performance Tracking counters
🔌 CONNECTION & PROTOCOLS
• ELM327 Bluetooth (Classic/SPP) and ELM327 WiFi
• Automatic OBD2 protocol detection: ISO 15765-4 CAN (11/29-bit, 500/250 kbps), ISO 14230-4 KWP2000 (5-baud & fast init), ISO 9141-2, SAE J1850 PWM and VPW
• Protocol and battery voltage shown on the home screen
🌐 Material Design 3 dark interface, landscape support, 12 languages.
📋 REQUIREMENTS
• OBD2-compliant vehicle: US gasoline cars from 1996, EU gasoline from 2001 (diesel from 2004), and most vehicles from around 2006 onward in other markets
• ELM327 Bluetooth or WiFi adapter (a good-quality v1.5 or later is recommended)
⚠️ NOTES
• CarSys reads standard OBD2 (emissions/engine) data. Manufacturer-specific systems such as ABS, airbags, transmission or BCM require a dealer-level tool.
• Available PIDs and functions depend on what your vehicle's ECU supports.
• Clear codes only with the vehicle stationary, engine off and ignition ON. Clearing codes also resets I/M Readiness.
• Do not operate the app while driving.
About CarSys - OBD2 ELM327 Scanner
The company that develops CarSys - OBD2 ELM327 Scanner is OBD High Tech. The latest version released by its developer is 3.0.
To install CarSys - OBD2 ELM327 Scanner on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-14 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the CarSys - OBD2 ELM327 Scanner as malware as malware if the download link to scan.dtc.obd.readcode.elm327.oht.carsys is broken.
How to install CarSys - OBD2 ELM327 Scanner on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the CarSys - OBD2 ELM327 Scanner is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by CarSys - OBD2 ELM327 Scanner will be shown. Click on Accept to continue the process.
- CarSys - OBD2 ELM327 Scanner will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 3.0
posted on 2026-10-14
What's new in 3.0:
• New Material 3 dark design, landscape and tablet support
• Available in 12 languages
• WiFi ELM327 support, auto-reconnect to your last adapter
• Stored, pending and permanent DTCs, with freeze frame inside each code
• New Gauge and Graph dashboards: all Live Data PIDs, MIN/AVG/MAX, full screen
• Redesigned DTC library search
• EVAP leak test (Mode 08); more accurate Mode 06, I/M and Vehicle Info
• Android 16 support, faster and more stable
version 1.8
posted on 2017-12-13
Fixed On-board Monitor Test
Fixed O2 sensor Test
version 1.4
posted on 2016-07-25
1.4,+ Update DTCs Database,+ Update API service.,+ Update User Interface.,1.3,+ Fix Crash Stop in (Gauge, Chart and O2 sensor test),+ Improve performance,+ Delete permission,1.2,+ Keep screen in (Gauge and Chart).,+ Improve performance.
Disclaimer
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