Carmaster

Hello all! Last visit to service is my headake now. They 've changed fuel modules and after that "Check engine" came on. The error is at the fuel system " The high limit is reached" . Tests show that the pressure is really high. About 4.7-4.9 bar . So fuel sensor work right. Both fuel pressure regulating modules show 3.6, 3.7 bar . what the f..g problem? Help please. Thanks in advance