Here is an affordable version of OBD II Generic Data readout. The application communicates with your vehicles ECU at the 16 Pin OBDII diagnostic connecter. Most of the OBDII connector location should be under the Steering Wheel Compartment. ELM 327 Bluetooth adapter is Required to make this application work. See information below for the Hardware Type Requirement. Vehicle computer system have multiple signal protocols and ELM 327 will support many of them. Currently, the following protocols are supported by the app and MUST be an OBD II Compliant Vehicle.* VPW - 1996-2004 Year (GM vehicles)* PWM - 1996-2004 Year (Ford vehicles)* ISO 9141(Slow) - 1996-2004 (Chrysler, European, and Asian vehicles)* KWP 2000(Slow/Fast) - 1996-2004 (Chrysler, European, and Asian vehicles)* CAN BUS (11/29 Bit) - (2004 and Newer)Do a Google search for a complete listing on the vehicle protocols. -----------------------------------------------------------OBDDiag Generic Supports the Following-----------------------------------------------------------* Mode 1 - Data Parameters* Mode 2 - Freeze Frame Data* Mode 3 - Read Current Faults* Mode 4 - Clear Faults* Mode 6 - On-board Test Result* Mode 7 - Read Pending Faults* Mode 9 - Vin, ECU Name, Tracking Performance Data and Calibration/Verification Id* Mode A - Read Stored FaultsDisclaimer Notice: Do not attempt to enter information or adjust your device while driving. Failure to pay full attention to the operation of your vehicle could result in death, serious injury, or property damage. You assume total responsibility and risk for using your device with this app.Tip: If App cannot Reconnect then try Unpairing/Pairing the Bluetooth Device. Some of the Phones may require restart.HARDWARE REQUIREMENT: ELM 327 Bluetooth Adapter. Orange/Blue Color Tag with Black Color Case have been tested successfully.Update: CHX, OBDII, Vgate Bluetooth Device tested ok. Requirement: Android 2.0 or higher for Bluetooth to function properly.