#1 10 Jun 2018 22:33 maciej.wojta maciej.wojta Level 3 » | #1 10 Jun 2018 22:33 Hello, I am asking for help in decoding the error codes EDC 04591 and TCU 00556.
Helpful post #2 11 Jun 2018 18:51 kakibara kakibara Level 34 » | Positive voted Helpful post? (+47) Helpful post #2 11 Jun 2018 18:51 EDC 4591 - boost pressure control. High pressure. Check Pierburg Valve No. 51094130022 TCU 556 - maybe misread, but error 0556 is only assigned to zbr and indicates retarder failure.
#3 26 Jun 2018 14:31 maciej.wojta maciej.wojta Level 3 » | Topic author Positive voted Helpful post? (+12) #3 26 Jun 2018 14:31 Both errors were passive. I was doing nothing. After cancellation, the third week and they do not appear.
