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Difference Between OBD1 and OBD2

car_jetta_pdOBD1 vs OBD2

When you’re buying a vehicle, two terms that will often confuse you are OBD1 and OBD2. Naturally, these will be taken in the automotive context.

The acronym refers to On-Board Diagnostics. Basically, it defines a vehicle’s capability to diagnose, or report itself. For example, if you have a high-tech OBD system in your car, and it has a problem, the OBD system will be the one to self-diagnose, or ‘tell’ the repair technician what is wrong with the engine.

With advancements in technology, came the improvements of OBD systems, and the latest ones use a standardized digital communications port that provides real-time data. This results in faster diagnostics of a vehicle’s problem, and more efficient remedies can be provided for the problem.

Now, here’s the difference between OBD1 and OBD2. With OBD1, the goal was to develop a diagnostics system which focuses on the emission control systems of a vehicle. When it came to its effectiveness, the OBD1 was not really that successful in forcing drivers to pass the emission control system’s test.

OBD2, on the other hand, is a definite improvement to the OBD1. OBD2 has better signalling protocols and messaging formats. When used in emission control system tests, it can provide better results for a vehicle’s parameters.

Meanwhile, when considering their manufacturing dates, OBD1s were introduced long before the OBD2 models, which only started in the early 1990′s. The OBD2 is a better system, in the sense that it provides standardized trouble codes for car owners who experience engine problems.

Finally, OBD1 is typically connected to the console, so that the port can be diagnosed and data can be read. OBD2 is remotely used to diagnose ports, and reads data through a Bluetooth connection. As such, it is easier to diagnose a problem remotely if you have a car made with an OBD2 system.

Summary:

1. OBD1 is connected to the console of a car, while OBD2 is remotely connected to the vehicle.

2. OBD1 was used during the earlier years of the car manufacturing industry, while OBD2 was only introduced in car models produced in the early 1990′s.

3. OBD1 has good diagnostic capabilities, while OBD2 has better signalling protocols and messaging formats.


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