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issu scan my opel Zafira A

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ja9588:
Hi,
I try to read engine defaut code from my opel zafira A 2001 (Protocole : ISO 9141 or KWP FAST ? )
I have an ELM327 wifi v1.5   https://www.ebay.fr/itm/164903357738?var=464414772296

I could connect but i read "no response from ECU"

what is the solution ?

thank you for your help

Artur:
Hi, please send message on info@scanmyopel.com

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