Hello i have a problem with an edc16 non communication with it at obd port would appreciate any guidance

GENERAL
1

Non communication with obd port on a edc16 ecu
Any thoughts or guidance much appreciated

2

Hi,
We need to know what exact car you are working with.

3

Screenshot_20250325-184542_WhatsApp
Screenshot_20250325-184542_WhatsApp1080×2220 268 KB

Citroen relay 3ltr diesel registered number NK58HXZ thanks chris

4

It’s from 2009, so the OBD must be over CAN bus.

Did you connect CAN 2 from ADU to the correct pins in the OBD port?
Did you select the correct bus speed?
Do you have CAN 2 errors?

5

I have tried them but can’t communicate through the obd

6

What haven’t you tried?
I don’t understand.

Please answer the three questions I asked.