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Where is the OBD II connector?

OBD II compliant vehicles have a 16-pin connector underneath the dash. Alternatively it can be behind ashtrays, or concealed by a removed plastic cover, sometimes with the letters “OBD” stamped on it. Some 1994 and 1995 vehicles have this connector and are only OBD I compliant. These OBD I vehicles are not supported by the scan tool.

OBD II Connector (front view)


Will the LaptopDyno and PDA-Dyno work on my vehicle? 

Both support all US 1996 and later passenger cars, light-duty trucks, and medium-duty vehicles including Domestic, European, Korean, and Asian. 

Heavy-duty vehicles with GVWR exceeding 14,000 pounds may not work. Some diesel vehicles may not be supported.

Some 1994 and 1995 vehicles are also supported with a sticker under the hood indicating OBD II compliance. All 1996 and later vehicles are OBD II compliant and do not require the under hood sticker.

Both support all protocols found on all cars sold in the US since 1996, including J1850 (VPW, PWM), ISO 9141, ISO 14230 (KWP 2000), and ISO 15765 (CAN).

Outside the USA. 

The United States required OBD II on all 1996 and later passenger cars, light-duty trucks, and medium-duty vehicles.

Europe and the UK adopted EOBD (European OBD). The LaptopDyno and PDA-Dyno work on EOBD. 

Vehicles sold in other countries have started requiring OBD in other years, or have no mandated OBD II requirements.

Country Fully Supported Years Incompletely Supported Years
United States 1996 and later 1994 and 1995
United States (Heavy-Duty vehicles with GVRW exceeding 14000 pounds) 1996 and later
Canada 1998 and later 1996 and 1997
Europe and UK (gas/petrol) 2000/01 and later 1996 to 1999
Europe and UK (diesel) 2003/04 and later 1996 to 2002
All Other Countries 1996 and later

The "Fully Supported Years" column means that 100% of the vehicles sold in that country conform to OBD II or EOBD starting in the year listed. 

The "Incompletely Supported Years" column means that some vehicles within that country will work and some will not. The OBD II Connector Pinout page can help to identify the standard your car uses.

The LaptopDyno and PDA-Dyno work on European OBD vehicles.

PC requirements for the LaptopDyno Windows software.

  • Windows Server 2003
  • Windows XP Professional
  • Windows XP Home Edition
  • Windows XP Media Center Edition
  • Windows XP Tablet PC Edition
  • Windows 2000 (Service Pack 2 recommended)
  • Windows Millennium Edition (Windows Me)
  • Windows 98
  • Microsoft Windows NT® 4.0 (Service Pack 6a required)

The computer must meet the following hardware requirements.

  • Pentium 166MHz or higher

  • 64 MB of RAM or more 

  • 9-pin serial port

  • 50 MB of available hard disk space

If your desktop or notebook PC is not equipped with a serial port, a USB to serial adapter is required.  



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