Hi,
Look at http://www.cisco.com/en/US/docs/ios/12_2sb/system/messages/sm2sb04.html#wp1015809
Error Message
%SIBYTE-3-CORRECTABLE_ECC_ERR : A correctable ECC error has occurred, A_BUS_L2_ERRORS: [hex], A_BUS_MEMIO_ERRORS: [hex], A_SCD_BUS_ERR_STATUS: [hex]
Explanation: A correctable ECC error has occurred.
Recommended Action : Copy the message exactly as it appears on the console or in the system log. Research and attempt to resolve the issue using the tools and utilities provided at
http://www.cisco.com/tac. With some messages, these tools and utilities will supply clarifying information. Also perform a search of the Bug Toolkit
http://www.cisco.com/pcgi-bin/Support/Bugtool/home.pl. If you still require assistance, open a case with the Technical Assistance Center via the Internet
http://tools.cisco.com/ServiceRequestTool/create, or contact your Cisco technical support representative and provide the representative with the gathered information.
I hope this helps.
Best regards.
Massimiliano.