Abstract: Method and system for forcing PCI-Express errors in a downstream path and upstream path is provided. The downstream path method includes enabling an error forcing function; determining if an additional stimulus is used for enabling an error condition; sending the additional stimulus to trigger error detection; and detecting a forced error condition at a qualifying event. The upstream path method includes enabling an error forcing function; determining if an additional stimulus is used for enabling an error condition; sending a stimulus to trigger error detection; inserting a forced error condition at a qualifying event; wherein a downstream PCI-Express device inserts the error condition; and detecting the forced error condition; wherein an upstream PCI-Express device detects the forced error condition.