The auto service technicians probably have to buy their own OBD scanners, so it would be whatever they decide to buy in that instance. The Snap-On Solus Pro is probably pretty common. If you want to buy one, it's about $3900. For $150 - $400, you can buy a lower end model at various auto parts suppliers such as O'Reilly, Auto Zone, Advanced Auto Parts, etc.
Diagnose and repair cars.
As long as you can get the car to power up (the lights and accessories come on in the RUN/Battery position), you can plug in a diagnostic scanner in and retrieve fault codes. You do not need the engine running. If the car cannot power up, then the computer cannot turn on and the scanner cannot access the fault codes. In this case, you need to find out why the car isn't getting power before you can use the computer to diagnose any problems.
The function of car diagnostic software is to diagnose any potential problems the car may have. It reads data from the car and tries to spot any trends that may be cause for alarm. there have many car diagnostic program, in fact, different diagnostic run on different diagnostic program.
You have a problem with the EGR system.
That's shop policy and you should ask before having the diagnostic done.
An OBD2 car diagnostic reader is used to diagnose any problems that a car might have and it saves time and money. For example, if there is an engine check light on, the OBD2 car diagnostic reader can tell what is the problem so it can be fixed as soon as possible.
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It's a place to hook up a diagnostic scanner when you need to find out why a car is giving you a "check engine" light. They're usually found underneath the steering wheel in newer cars or in the engine bay on some older cars.
For just reading codes, any OBDII scanner.
Car scanners are used to diagnose and repair various malfunctions within an automobile. Many car scanners have extensive software libraries that can not only diagnose the problem in a specific make and model of vehicle, but also suggest a specific repair to fix the problem.
If you have a modern car, then the only device you will need is a car diagnostic computer scan. The scan will look at all the computer systems in your car and see if they have logged any issues with your car.
Unlike the older cars with CCC you cannot get trouble codes with your car without the scanner. Often Autozone or Advance will connect your car to a scanner for free, to see if there are codes stored. Remember just because a sensor sets a code, doesn't mean that the sensor is bad, It is in that circuit, so it could be the wiring, plug loosem vacuum lines to the sensor, etc. Good luck.