OBD Master Pro | Car Scanner

CAR SCANNER ELM

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About this app

See what your car is doing in real time. OBD Master Pro is a professional OBD2 car scanner and ELM327 diagnostic tool: read and clear fault codes (DTC), turn off the check engine light, code hidden features, and monitor live sensor data.

4,000+ hidden coding features, 400+ service tools, 1,700+ ECUs, 500+ brand live data signals. Works with any ELM327 / ELM329 adapter over Bluetooth, BLE, Wi-Fi or USB OTG. No proprietary dongle. Trusted by 5,000+ Car Scanner ELM OBD2 users.

More than a standard OBD2 app: odometer rollback detection, EV / hybrid battery health, parasitic battery drain test, dashboard warning-light guide, symptom checker, and 400+ dealer-level service resets.

SUPPORTED CAR BRANDS

Coding + diagnostics: Audi, Volkswagen, Skoda, SEAT, Toyota, Lexus, Hyundai, Kia, Opel, Vauxhall, Chevrolet, Renault, Dacia, Mitsubishi, Nissan, Volvo, Lada, Haval. Diagnostics + fault codes: BMW, MINI, Porsche, Cupra, Ford, Lincoln, Fiat, Alfa Romeo, Jeep, Chrysler, Dodge, RAM, Maserati, Peugeot, Citroen, DS, Honda, Acura, Cadillac, GMC, Buick, Infiniti, Mazda, Subaru, Mercedes-Benz, Jaguar, Land Rover, and every OBD2 car.

ECU CODING - HIDDEN FEATURES

Change the hidden settings of your car:
- VAG (Volkswagen, Audi, Skoda, SEAT): MQB, PQ26, MLB-Evo
- Toyota / Lexus (CAN, 2008+)
- Opel, Vauxhall, Chevrolet
- Hyundai, Kia
- Renault, Dacia
- Mitsubishi, Nissan, Volvo, Lada, Haval

Exclusive VAG functions: Video in Motion (VIM), MirrorLink in Motion (MIM), Traffic Jam Assist, Drive mode profiles, Ambient lights, Coming Home lights, needle sweep, comfort turn signals, mirror folding, DRL, start-up logo, and more. Auto-backup + one-tap revert.

FULL-SYSTEM DIAGNOSTIC SCAN

Scan engine, transmission (DSG, ZF), ABS, airbag (SRS), body control, instrument cluster, climate (HVAC), power steering, electronic parking brake (EPB), TPMS, gateway, immobilizer, infotainment, air suspension. UDS, ISO 15765-4 CAN, KWP2000, ISO 9141-2.

CLEAR CHECK ENGINE LIGHT

Read stored, pending and permanent DTC fault codes across all ECUs like a pro scan tool and code reader. Reset the check engine light in one tap. Huge built-in fault code database, OBD2 + EOBD.

WARNING LIGHTS GUIDE & SYMPTOM CHECKER

Look up any dashboard warning light to see what it means and what to do. Or pick a symptom and get the most likely causes and what to check next.

SERVICE TOOLS & RESETS

DPF regeneration, battery registration (BMW, VAG), EPB service, TPMS reset, oil reset, service indicator reset, tire size calibration, throttle body adaptation, transmission adaptation reset, aux heater unlock, SFD unlock, VAG adaptation channels, ABS bleeding, air suspension calibration, used car check.

BRAND LIVE DATA

See all your sensors on one screen, including data hidden from standard apps: DPF soot, battery SOC / SOH, EV cell voltages, oil & transmission temp, turbo boost, MAF, fuel trim, lambda, EGR, and hundreds more. Add your own custom & extended PIDs.

ODOMETER ROLLBACK DETECTION

Read the true odometer from ECU memory and compare it to the dash - spot mileage rollback before buying a used car.

EV & HYBRID BATTERY HEALTH

State of Charge (SOC), State of Health (SOH), cell voltages, pack temperature and health rating for Hyundai, Kia, Nissan Leaf.

PERFORMANCE, HUD & TRIP COMPUTER

Turbo boost, torque / horsepower, 0-60 / 0-100 timer, quarter-mile, CO2, fuel economy (MPG). HUD windshield mode. Car Mode with voice commands. Custom dashboard, GPS trip log, CSV export, QR share.

DIAGNOSTIC TOOLKIT

Freeze frame, emission readiness / smog check, O2 lambda, battery & alternator test, Mode 06, Mode 09 VIN decoder, custom PID builder, data logging + playback, fuel calibration, maintenance reminders, multi-vehicle garage.

WORKS WITH ANY ELM327 / ELM329

Bluetooth, BLE, Wi-Fi, USB OTG. Compatible with OBDLink, Vgate iCar, Veepeak, Kiwi 3, VLinker, Carista, LELink and any genuine ELM327. Avoid cheap v2.1 clones - they are buggy.

Download OBD Master Pro and take control of your car.

What’s new

- Improved Bluetooth and Wi-Fi adapter connection reliability
- ECU coding: VAG (Audi, VW, Skoda, Seat) on MQB, PQ26, PQ35, MEB, MLB
- Stellantis coding: Alfa Romeo, Fiat, Jeep, RAM, Maserati
- BMW F and G fix; Mercedes, Hyundai, Kia, Toyota, Nissan rewritten
- VW TP 2.0 for pre 2008 VAG; DTC scan with 15 brand gateways
- Live data: 32 PIDs, 36 decoders, recorder, backup and restore
- Bug fixes and stability improvements