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ECU responds to OBD2 requests but not to CAN ISO-15765 requests.

Posted: Mon Mar 23, 2026 11:36 am
by pawelpk
Hi,

I am using vgate icar pro device v2.3. The DPF app manages to connect to the device but after that I get an error message when it is trying to connect to ECU "ECU responds to OBD2 requests but not to CAN ISO-15765 requests"
I checked my icar device with ELM327 identifier app and everything is "green" so I guess the device is ok. I am using BT version.
My car is Skoda Octavia RS with 2.0tdi 200PS engine code DTUA
Does anyone have similar problem or an help with it?

Re: ECU responds to OBD2 requests but not to CAN ISO-15765 requests.

Posted: Mon Mar 30, 2026 2:34 pm
by admin
That message usually refers to a wrong engine group or a bad ELM adapter.
Did you try with engine group 97? Maybe your engine has the new 29bit init, some DTUAs do have it.

Re: ECU responds to OBD2 requests but not to CAN ISO-15765 requests.

Posted: Sun Apr 19, 2026 12:58 am
by pawelpk
I tried engine group 97 and it works now, thanks! I get some error message when connecting but once I click "ok", app is connected and up and running.