I recently bought a 2000 Volvo S80 for $750 had it for two months over all has been a great buy . But for the price I paid there are some things wrong with it. Question is I'm getting 3 codes. Vehicle speed sensor, abs module (communication fault) , and abs pump (communication fault) . Wondering if I just need a abs module or do I need to replace both pump and the module. Any help would be greatly appreciated.