Hi!
I'm using this OID to collect the number of CRC error packets:
hwIfEtherStatInCRCPkts
1.3.6.1.4.1.2011.5.25.41.1.6.1.1.12.If it's still not working, the problem should be with the SNMP configuration. Make sure the SNMP version and community is v2c and public.