As a pre-requisite to view post codes locally, this functionality must be provided by the OEM BIOS. In the case where these POST codes are made available on screen the next challenge would be to pause and step the post remotely in order to ensure that all codes have a chance to refresh the SOL transport and not be missed.
This seems like a good future use case for in depth diagnosis via AMT which I will pass on appropriately.
Digital Office - Problem Resolution Engineering
Intel Corporation - Digital Enterprise Group