Connecting obdii code reader in a car

How to Use Basic OBDII Code Reader For Beginners

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In this article I will try to give all the basic info about obdii code reader and scanner to help beginners who are interested in Do-it-yourself (DIY) auto repairs have a head start.

The idea is to answer all the questions a novice would ask to have basic knowledge about self automobile diagnostics and repairs.

What is an OBD II Code Reader?

Have you ever had problems with your car and took it to the auto shop? Did you also experience being told by the mechanic that everything is under control and fixing the problem is sure to be a cinch? Did they also charge you separately for fluids, a certain part, and other expenses?

Well, with an obdii code reader, you will have an easier time detecting car problems. This is because the technology is a good way to diagnose certain problems in cars.

OBD II code reader scanner is a specially designed plug that can be used in car models starting from 1996. The plug functions as a computer interface.

This interface gives you the chance to monitor the standardized emissions and other crucial systems in your vehicle. When connected to the On-Board Diagnostic (OBD) Port, under the hood of your automobile.

The code reader is in fact very simple to use and quite convenient too.

How does An OBDII code Reader scanner work?

When it is installed and connected, you will be able to receive updated information regarding the status of your car. Additionally, it aids in monitoring and detecting malfunctions in your engine.

The most common malfunctions that can affect the engine could be in the fuel injection, fluid, oil, spark plug, throttle and other parts. Plus, it is really good for identifying specific problems in your car.

What’s more?

The alpha-numeric error codes representing the important parts of your vehicle are easy to interpret.


In short, the OBDII code scanner is a handy device for car owners who regularly have car problems. The accuracy with which car problems are identified gives car owners the chance to catch the problem as it starts. This saves a lot of time spent at the car repair shop and a lot of money spent in diagnosing the problem manually.

With the code reader, you car owners don’t have to waste a lot of time going from one shop to another just to find out what could be wrong with their vehicles.

Where is OBD II Code Reader Scanner Supposed to be Installed?

The law mandates that code scanners be placed within three feet of the driver. Further more, the driver must not need certain tools in order to access the device.

So, most code scanners are located near the foot area of the driver. Specifically, it should be found in the fuse box.

How to Use the OBD II Code Scanner

Knowing how to use the OBD II code reader scanner in your car is vital in ensuring that your car runs smoothly and does not require frequent trips to the auto repair shop. Plus, the opportunity you get to detect car problems gives you the chance to protect yourself.

The OBD ii scanner in your car is basically a diagnostic tool. The tool gets into your car’s data processing machine in order to give you information regarding the defects that your car may be having.

The ODB II car scanner identifies defects or errors in your automobile. You need this so that you are made aware of the things that could hamper your driving and the efficiency of your vehicle.

When you know what is wrong with your vehicle you will know the next step to take. If you know how to fix the problem, you can do it yourself. If otherwise, you can take your car to the experts to ensure that the problem is fixed right.

On Which Vehicles can The OBD II Scan Tool Work?

The scanner is meant for vehicles from 1996 on-wards. Vehicles manufactured before 1996 are not compatible with the OBD II code scanner. As such, car owners have to get the ODB 1 auto scanner to monitor car problems.

How do you use the ODB II code scanner?

The first thing you need to remember is to turn your vehicle off.

Connecting obdii code reader in a car

Next, you plug in the OBD scanner to the car’s data processor connection. Generally, most cars have their data processors underneath the dashboard, the area close to the steering wheel.

The next step is to turn on the ignition and then push “read” on the device. You then have to wait a few seconds for results to appear on the auto scanner.

There are some OBD II models that will directly show the problem with your automobile. However, there are also OBD II scanners that provide alpha-numeric codes. For this, you need to look up the meaning of the code in a code directory.

The code directly could be part of the product manual of your OBD II reader or you can access one online. After that, you will be able to know what the specific issue is with your vehicle.

Additionally, there are code scanners that are equipped with their own application software. The software can be downloaded onto your computer so that you can get more detailed information about your vehicle problems.

There are also advanced obd2 diagnostic scanners out in the market. The more advanced models come with special features not found in basic models. This means that you can have more information from the newer models.

What are examples of these features?

Well, you can benefit from car performance analysis. This feature is good when you go driving on weekends.

To cut a long story short, your car can do well with an OBD II scanner on board. The vital information that you can get from the device will help you detect small problems in order to keep them from transforming into bigger ones.


In conclusion, OBDii code reader scanners are important devices to use with your beloved vehicle. If you are handy with tools or are adept in doing quick fixes in your vehicle, you can use the information from the code scanner to your advantage.

If you are not, you can use the information to protect yourself from unscrupulous mechanics who will rip you off by diagnosing problems that don’t actually exist. In short, you can use the OBD2 scanner for your safety and protection. You won’t regret the amount of money you invest in such a device.










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