How to Know if My Car Has OBD-II?

Auto Tools FAQs.

How to Know if My Car Has OBD-II?

Postby Emily » Sat Apr 19, 2014 9:37 am

All cars and light trucks built and sold in the United States after January 1, 1996 were required to be OBD II equipped. In general, this means all 1996 model year cars and light trucks are compliant, even if built in late 1995.

Two factors will show if your vehicle is definitely OBDII equipped:

1) There will be an OBD II connector located under or around the dashboard, and
2) There will be a note on a sticker or nameplate under the hood: "OBD II compliant".

Where is the connector located?

The connector must be located within three feet of the driver and must not require any tools to be revealed. Look under the dash and behind ashtrays.
connector-located.jpg
connector-located.jpg (32.82 KiB) Viewed 862 times


The Three Flavors of OBD II

While the parameters, or readings, required by OBD II regulations are uniform, the auto manufacturers had some latitude in the communications protocol they used to transmit those readings to scanners. Naturally, each felt they had the one true way, so we have three different OBD II communications protocols in use.
Emily
 
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