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I'm developing an app that read data from car via OBD port. I'm not expert with this port and i would like to know which type of data i can read from this port.

For sure i can read speed, rpm, coolant temperature,Trouble code and clear it... I would like to know if it possible to read information from ABS, ESP and Airbag for example.

You know what can i see from this port ?

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  • What kind of data are you looking for from the airbag? Unless you're planning to drive your car into a collision, there's probably no useful data you can obtain related to airbags.
    – juhist
    Commented Sep 8, 2017 at 12:08
  • You can read data from any module on the network. Assuming you know what you're looking for and have the information to convert it to something readable.
    – Ben
    Commented Sep 8, 2017 at 12:33
  • @juhist whitout collision maybe :D .... i can read Airbag state? Active-not Active ... check if Airbag is ok (like a test if problem occur)
    – Dario
    Commented Sep 8, 2017 at 12:46
  • @Ben I know what i'm looking for and i know how convert information, for example for read rpm i send the command 010C and the car (Elm327) respond with 41 0C 00 00.... the problem is that i don't know the PIDs for commands like exthernal temperature, gasoline level.... I can found them in the Car manual (maybe) ?
    – Dario
    Commented Sep 8, 2017 at 12:46
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    Anything outside of obd2 you need to pay for the info. You may be able to find the info online (think thousands of USD), but that's a big maybe.
    – Ben
    Commented Sep 8, 2017 at 12:49

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Today i talk with my mechanic and he explain to me how the OBD reader works.

He say: "You can read and do everything with OBD, like open car, start car etc etc.. But this is not possible with normal PIDs like the list of PIDs in wikipedia but i need specific code that only the mother house of car have"

As other user in this topic say in the comments.

Like Ben say:"Anything outside of obd2 you need to pay for the info. You may be able to find the info online (think thousands of USD), but that's a big maybe."

So with normal usage of OBD port it's possible to read only this commands:

List of pids

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