Train doors at Front DT car were not proven closed. TC recycled train doors three times to clear fau lt. Fault did not recur at subsequent stations. ~~~~~ CHECK ONTIMS FAULT RECORD U BLE TO FIND FAULT HISTORY.CYCLED TRAIN DOORS OPENING AND CLOSING FOUND #2531 A2 DOOR HAS INTERMITTENT FAULT CLOSING TIMING OUT OF CRITERIA BY 1 SECOND INTERMITTENT FAULT WHERE DOOR DID NOT CLOSE.TO RAISE OPS20 TO FOLLOW UP.ETHAN/LOW CF/ JAYA/FAHMI S/FAHMI Y 28.01.2023  #2531 A2 DOOR CHECKED AND FOUND LHS ROLLER FAULT.REPLACED.FURTHER CHECKED FOUND MANIFOLD FAULTY REPLACED.FUNCTION CHECKED OK.NO FURTHER ABNORMALITIES FOUND.KA   28.01.2023