A powerful OBD2 car diagnostics tool. Read DTCs, design custom dashboards, and track trips with the ELM Trip Computer.

Obd Mary is an EOBD/OBD-2 car diagnostic scanner, gauge dashboard, and trip computer packed with useful features.

Our OBD2 Car Scanner OBD Mary not only reads and clears OBD-2 trouble codes but also performs diagnostics on various vehicle ECUs, including ABS, SRS, Airbag, HVAC, and more.

OBD Mary works with a wide range of car brands such as: Acura, Alfa Romeo, Alpina, Audi, BMW, BYD, Buick, Cadillac, Changan, Chery, Chevrolet, Chrysler, Citroen, Dacia, Daewoo, Daihatsu, Daimler, Datsun, Dodge, DS, Exeed, Fiat, Ford, Geely, General Motors, Genesis, GMC, Great Wall, Haval, Holden, Honda, Hummer, Hyundai, Infiniti, ISUZU, JAC, Jaguar, Jeep, JMC, Kia, KTM, Lada, Lancia, Land Rover, Lexus, Lifan, Lincoln, Lotus, Mahindra, Mazda, McLaren, Mercedes-Benz, Mercury, MG, Mini, Mitsubishi, Nissan, Opel, Peugeot, Pontiac, Porsche, Proton, RAM, Range Rover, Ravon, Renault, Rivian, Rolls-Royce, Rover, Saab, Samsung, Scion, Seat, Skoda, Smart, SsangYong, Subaru, Suzuki, Toyota, Vauxhall, Volkswagen, Volvo.

Important Notes:

1. An ELM327 Bluetooth or Wi-Fi adapter is required to connect the app to your vehicle.

2. Your vehicle may have multiple ECUs (electronic control modules). Remember to check all of them.

3. ELM adapters version 2.1 are often unreliable, so choose version 1.5 if possible.

Quick Start Guide

1. Download the app

2. Plug the ELM327 adapter into your vehicle's 16-pin diagnostic port

3. Turn the ignition ON

4. Find your Bluetooth ELM adapter in your Android device's settings

5. Select the discovered ELM327 adapter in the app settings

6. Try to connect!

Diagnostics

Read and reset trouble codes from OBD2-compliant control units. View fault code descriptions and search them online with one click. Access freeze-frame data when a DTC is active. Monitor live parameters like speed, RPM, MAF, and coolant temperature.

Dashboard

Use the app as a digital gauge dashboard. Build your own gauge set and customize nearly all aspects, including sizes, colors, positions of strokes, arrows, text, labels, and backgrounds. In edit mode, resize and reposition gauges with finger gestures. Create the perfect style for you!

Trip Computer

Track your trips with Obd Mary and your ELM327 adapter. Keep the adapter plugged in, and the app will automatically log trip data such as:

- Trip duration

- Fuel consumption

- Fuel cost

- Average speed

- Maximum speed and more

Full Version

Upgrade to the full version of Obd Mary to unlock all features and enjoy an ad-free experience. Your purchase supports ongoing development and maintenance. Thank you.

Contact the Developer: Feel free to reach out using the contact button on the main app screen. Please use email.

### What's New in Version 1.251

Last updated on Nov 10, 2024

Added gauge templates to the Dashboard
Added more OBD-2 parameters
Fixed various bugs