Hello. I have same problem. Can connect to engine, but can't connect to CAN modules. My ELM 327 interface has a chip CH340G. I will post some pictures of the board and if some one can help me i would be grateful. Thanks in advance. https://drive.google.com/file/d/1eueCKERsFD3Nwf_MFGVhjLafevboO6Sn/vi...