ATS Alarm showed "Train door 0 status lost while the train is moving". TC feedback that the DIR was intermittently illuminated in between stations but there wasno DMI shown and TIMS showed no fault. ~~~~~ ER downloaded. Checked and found 3551 Bside car door wire high resistance. Found screw loose, Retightened screw. Check resistance and found acceptable (0.4 Ohm) Carry out door gauge check on all doors , found ok. Fault unable to duplicate. N.A LAI..M.K/09.12.21 -------------------