OBD Master Pro is an OBD2 car scanner and code reader for ELM327 adapters. Plug in a Bluetooth, Wi-Fi or USB adapter, read fault codes, see why the check engine light is on and watch live data on your phone. No proprietary dongle needed.
From reading a check engine code to ECU coding, OBD Master Pro turns your phone and an ELM327 adapter into a full car diagnostic tool.
Read stored, pending and permanent trouble codes (DTC), find out why the check engine light is on, and clear codes to reset the warning light.
Watch OBD2 sensors in real time on circular or digital gauges, live charts and a dedicated O2 sensor screen.
Coding for VAG, BMW, Hyundai / Kia, Renault, Stellantis / FCA, Nissan, Ford and Toyota / Lexus.
Know before you inspect: emission readiness check, Mode 06 and freeze frame data.
Measure your car's acceleration with built-in timers.
A health score from 0 to 100 based on fault codes and key sensors, with history.
Keep every car organised in your vehicle garage with make, year and VIN.
Connection profiles for 177 brands plus a generic OBD2 / EOBD profile for any OBD2 compliant vehicle, including some motorcycles where the profile supports it.
Bluetooth Classic, Bluetooth LE, Wi-Fi and USB OTG. Standard ELM327 and ELM329 class adapters, no proprietary dongle needed.
A clean, dark interface built for use in the garage or on the road.
Three steps from plugging in to knowing what's wrong.
Plug your ELM327 OBD2 adapter into your car's OBD2 port, usually under the dashboard near the steering column, and turn the ignition on.
Open OBD Master Pro and connect over Bluetooth, Bluetooth LE, Wi-Fi or USB. Pick your car's profile or use the generic OBD2 / EOBD profile.
Scan for trouble codes, check readiness, watch live sensor data and get a health score for your car in seconds.
OBD Master Pro works with standard ELM327 and ELM329 class adapters. You don't need a proprietary dongle.
Adapter tip: many cheap ELM327 clones only handle engine OBD2 and drop out on ABS or airbag. For multi-module diagnostics and coding, use a genuine ELM327 class adapter. A list of tested adapters is available inside the app.
Any standard ELM327 or ELM329 class OBD2 adapter works. OBD Master Pro supports Bluetooth Classic, Bluetooth LE (no pairing needed), Wi-Fi and USB OTG adapters. No proprietary dongle is required.
It works with OBD2 / EOBD compliant vehicles through the generic OBD2 profile, and includes 1,304 connection profiles for 177 brands. Which modules and extra data you can read depends on your car, its modules and your adapter.
OBD Master Pro is available now for Android on Google Play. An iOS version for iPhone is coming soon.
Yes. You can clear stored trouble codes and reset the check engine light. If the underlying fault is still present, the light will come back, so read and fix the cause first.
Many cheap ELM327 clones only handle basic engine OBD2 and drop out on ABS or airbag modules. For multi-module diagnostics and coding, use a genuine ELM327 class adapter. Bluetooth LE adapters connect from the BLE tab and classic Bluetooth adapters from the Bluetooth tab.
Yes. Coding is available for VAG (VW, Audi, Skoda, Seat, Cupra), BMW (E and F/G/I), Hyundai / Kia, Renault, Stellantis / FCA, Nissan, Ford and Toyota / Lexus, including long coding, adaptations, service resets where supported, and coding backup and restore.
The app includes 0-100 km/h (0-62 mph), 37-62 mph, 0-93 mph and quarter-mile tests. Only run performance tests where it is legal and safe, such as a closed track.
Open the app, go to Connection, try to connect, then use Share connection log and email it to contact@obdmasterpro.com. Support is free.
Questions, feedback or connection trouble? Email us and our team will help. If your adapter won't connect, attach the connection log from the app (Connection > Share connection log).
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