Torque is an engine diagnostics application for Android that allows you to directly monitor your car engine control unit (ECU) and retrieve various information from the sensors connected to it as well as use your phones internal GPS and accelerometer sensors to graph other information such as acceleration
Torque can be used to view any stored fault codes on your vehicles ECU, then, after a mechanic fixing the fault, it also can clear the fault codes allowing you to clear the ‘Check Engine’ light warning on your dashboard
Torque can use a multitude of OBD adapters, ranging from the cheap (and slightly buggy) adapters you can find on ebay, to the more reliable
The adapters are used to interface your Android device to the vehicle engine control unit (ECU).
OBDLink MX, pictured above – one of the fastest and most compact adapters from scantool.net
Kiwi Bluetooth, pictured above – a good adapter from PLX devices
OBDKey, well constructed – "It just works!"
Generic bluetooth adapter from ebay, generally alright but some can suffer from build quality issues affecting reliability, and causing strange things to happen like engines refusing to start. Try to avoid if you can
PLX devices kiwi Wi-Fi OBD, good but you have to hack your phone for root access, the recently announced PLX Kiwi Bluetooth adapter is preferred as no modifications are required.
Torque can be downloaded from the Android market ad free, or you can try the ad-supported version. Torque works on android 1.5/1.6/2.0/2.1 or above!
The change log and version history for Torque can be viewed by clicking here.
Any car manufacturered from 2000 onwards (and quite a few from the mid ’90s) should have an OBD2 compliant diagnostics port installed. Check your manual or google if you are unsure if yours has one or where it is – some ports are hidden quite well under ashtrays, etc.
Torque can also upload in realtime data to the Torque viewer website so that you can view your recorded OBD data online
Some screenshots from Torque for Android are shown below (Click the image for full size view)
There is now a forum available to discuss Torque!