Turn your mobile into automotive scanner

With OBD Auto Doctor car diagnostic app, you can communicate with your vehicle's On-Board Diagnostic system and turn your Android mobile or tablet into a highly capable automotive scanner. Whether you want to monitor data in real-time or reset "check engine" light, this is the only OBD-II software you need!

Get it on Google Play

It's a Free App
Upgrade to Pro in-app

Trouble Codes

Read diagnostic trouble codes (DTCs), reset the codes and the check engine light (a.k.a MIL). Upon malfunction, get access to the Freeze Frame.

Read: What to do when Malfunction Indicator Light illuminates?

DTC Database

Search and browse manually the DTC database for generic and manufacturer specific trouble codes. The trouble code database contains more than 14000 diagnostic trouble codes.

Readiness Monitors

The readiness monitors self-test the car’s emission systems. Read monitoring test results to make sure your car is ready for annual inspection.

Read: Readiness monitors explained

Sensors and Parameters

Sensors and parameters are what most of you find the most interesting part of the software. You can monitor all the sensor values that your car reports in real-time, including fuel consumption.

Read: The supported OBD-II sensors and parameters


If you are interested in gauges, OBD Auto Doctor has a beautiful dashboard for you. For now the dashboard contains just few gauges but in the next versions of the app, we will improve the dashboard.

Vehicle Information

Get access to all basic information of the Engine Control Unit including Vehicle Identification Number (VIN), Calibration Identifications (CALID), Calibration Verification Numbers (CVN), and ECU name queries.

Read: How OBDII helps you when buying a used car

Upgrade to the Pro version now and get all future updates for free automatically.

Android Version Feature Comparison Matrix

Lite Pro
Diagnostic Trouble Codes
Confirmed DTCs supported supported
Pending DTCs supported supported
Permanent DTCs supported supported
Manufacturer specific DTCs limited supported
Freeze Frame limited supported
Clear DTCs and MIL limited supported
Send diagnostic info using e-mail supported supported
DTC Database
Search Trouble Codes supported supported
Generic DTCs supported supported
Manufacturer Specific DTCs limited supported
Continuous Monitors supported supported
Non-Continuous Monitors supported supported
Live Sensor Data limited (limited) supported
Sensor Graph (scope) limited (limited) supported
RPM and Speed supported supported
Vehicle Information
Scantool information supported supported
Battery Voltage supported supported
OBD standard and bus protocol supported supported
ECU name supported supported
Vehicle Identification Number limited supported
Calibration Identifications limited supported
Calibration Verification Numbers limited supported
Metric and Imperial Units supported supported
Gasoline and Diesel Engines supported supported
Supported Protocols
SAE J1850 PWM supported supported
SAE J1850 VPW supported supported
ISO 9141-2 supported supported
ISO 14230-4 KWP supported supported
ISO 15765-4 CAN supported supported

Please notice that all the features require that your vehicle supports them too.

"Best out of 5 or 6 tool trials. Had zero problems with this tool. It does what I want and clears codes."

Richard Miller

"Works great! Money well spent! Saved me hundreds of dollars for sure. Super happy with this tool I recommend this highly!!!!"

Randy Kimmel

"Perfect connection between SGS3/4G and ELM327 Connection between hardwares are fast and easy."

Francis Ngo

"Happy Client got a Kiwi BT dongle for christmas, this program works spot on with it!"

Robin Fowler

"Awesome I'm in the auto industry and if i had to buy a machine that does all this it would cost a fortune. Well worth $10."

Sean Stephens

"Like it Works well with my cheapo ebay ELM device. Prefer this to Torque - looks much more professional."

Andrew Moir

"Top notch! Comprehensive suite of tools in Pro version; performed flawlessly."

Download the app to your phone for free!

Looking for Quick Start Guide for Android? Download the PDF guide for Bluetooth adapters or WiFi adapters!