no, it's not just an informational syslog. according to cisco.com's error message decoder tool:

%PM_SCP-2-LCP_FW_ERR_INFORM:

Module [dec] is experiencing the following error: [chars]

An error condition was detected by the line card firmware and the supervisor is being informed about it.

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.

Related documents- No specific documents apply to this error message.

in other words, try to open a cisco tac case to further troubleshoot.