On Board Diagnostic (OBD)

1400 Words3 Pages

WHAT IS OBD II

OBD II stands for the most recent On Board Diagnostic. OBD II came out as a result of the Clean Air Act Amendment of 1990. It was introduced in some 1994 model vehicles and by 1996 all cars and some trucks built and sold in the U.S. Jan 1, 1996 and after were required to be equipped with it. The purpose of this technology was to “reduce emissions by monitoring the performance of major engine components”. [1]

Clean Air Act Amendment of 1990 and OBD II

OBD I predecessor was the OBD 1, this was implemented in 1988, but did not satisfy all needs and requirements and that is where the OBD II. The Clean Air Act Amendment of 1990 “mandated that beginning with the 1996 model year, all light-duty vehicle …show more content…

There are a lot of issues, whereas the computer isn’t computing the exact issue, and the PCM doesn’t know exactly what to read. The PCM then chooses some random number to take the place of the output of the sensor and moves forward. Another potential issue is that all scan tools don’t read or work the same way. A code that pops up for a Hyundai sonata wouldn’t be the same code that pulls up for a Nissan Altima. That is one reason why the scanner requires user to input specific car information to make sure the results are as accurate as possible. [4]

Who can use it/ how is it Used

OBD is used across the board. Mechanics at dealers use them, local car shop, franchise car shop, your local mechanic, and any regular Joe can use the OBD. The ODB II Scanner diagnostic tools can be bought at your local store. It can be found at Advanced Auto Parts, Walmart, Sears, and also can be purchased online. Once purchased anyone with a code scanner is able to check the codes in their cars system. The cost can vary though, and some scan tools can range from $19.99- upward of $400.00

How to check the

Open Document