Fault code 00476

Just bought myself a Vag com fault code finder from ebay mainly for resetting the service light on the 2008 Fabia but also to monitor my own 1.9 awx superb after running a scan on the superb it threw up a code 00476 (Control module for fuel pump J538) The car is going fine bags of power no misses might be a little harder on diesel than it used to be 44mpg but there is 223000 miles on it anyone have any idea what this module is for and where it is located or is the code reader crazy