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

**URL:** https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431
**Category:** GENERAL
**Created:** [March 27, 2025, 9:42am UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431 "2025-03-27T09:42:56Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![Cass](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@Cass](https://community.ecumaster.com/u/Cass)
#### Post date: [March 27, 2025, 9:42am UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431/1 "2025-03-27T09:42:56Z")

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

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### Author: ![mkuklis\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/mkuklis_ecumaster/32/104_2.png) [@mkuklis\_ECUMASTER](https://community.ecumaster.com/u/mkuklis_ECUMASTER)
#### Post date: [March 27, 2025, 11:45am UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431/2 "2025-03-27T11:45:29Z")

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

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### Author: ![Cass](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@Cass](https://community.ecumaster.com/u/Cass)
#### Post date: [March 27, 2025, 1:12pm UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431/3 "2025-03-27T13:12:49Z")

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![Screenshot_20250325-184542_WhatsApp](https://europe1.discourse-cdn.com/flex013/uploads/ecumaster/original/2X/5/5d178b9dbfbd2b34f0adb2791065a5600e22fea5.jpeg)  
Citroen relay 3ltr diesel registered number NK58HXZ thanks chris

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### Author: ![mkuklis\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/mkuklis_ecumaster/32/104_2.png) [@mkuklis\_ECUMASTER](https://community.ecumaster.com/u/mkuklis_ECUMASTER)
#### Post date: [March 27, 2025, 1:34pm UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431/4 "2025-03-27T13:34:22Z")

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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?

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### Author: ![Cass](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@Cass](https://community.ecumaster.com/u/Cass)
#### Post date: [March 28, 2025, 9:11am UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431/5 "2025-03-28T09:11:04Z")

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

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### Author: ![mkuklis\_ECUMASTER](https://dub1.discourse-cdn.com/flex013/user_avatar/community.ecumaster.com/mkuklis_ecumaster/32/104_2.png) [@mkuklis\_ECUMASTER](https://community.ecumaster.com/u/mkuklis_ECUMASTER)
#### Post date: [March 28, 2025, 10:55am UTC](https://community.ecumaster.com/t/hello-i-have-a-problem-with-an-edc16-non-communication-with-it-at-obd-port-would-appreciate-any-guidance/3431/6 "2025-03-28T10:55:14Z")

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

Please answer the three questions I asked.