TC reported TIMS showed obstacle detected at car 3644 'B2' door. Staff (CCK) checked and confirmed n o abnormalities. Fault persisted when train doors are close from BGB2 . ~~~~~ TC reported TIMS showed obstacle detecte     Check Tims no observed any door FC.ER downloaded in PTU 006-No FOD found.Mating strip,DLS,DSS check ok.Push/Pull resistance high(16kg) due to sticky dirt on J-rail,clean and service check resistance(6-7kg)ok.Conduct door static test ok. Done by Sateesh/Kalees/Huiqal/Sanip/Koh. 03/01/21