Mae'r broblem yn cael effaith ar y gwasanaethau rheilffyrdd ledled y DU, fodd bynnag, er gwaethaf yr oedi hwn, mae Trafnidiaeth Cymru wedi gweithio'n galed i sicrhau cerbydau ychwanegol ar ffurf trenau sy'n cael eu tynnu gan loco Class 37 a threnau Class 153 ychwanegol.
This issue is affecting rail services across the UK, however despite this delay, TfW have worked hard to secure additional rolling stock in the form of the Class 37 loco-hauled trains and additional Class 153 trains.