Hello,
“Message Sent Successfully” showed you can initiate your shield successfully, there is no problem with your hardware.
But “Error Initializing MCP2515”. was also shown in some examples, so I guess that you forgot to check this line of code, the value is 9 or 10, which depends on shield version.
</s>MCP_CAN CAN0(10); // Set CS to pin 10<e>
Sounds that you just need to analyze the signals without programming, why not buy a USB-CAN-Analyzer? That would save a lot of time.
<LINK_TEXT text=“https://www.seeedstudio.com/USB-CAN-Ana … -2888.html”>https://www.seeedstudio.com/USB-CAN-Analyzer-p-2888.html</LINK_TEXT>
Good luck.