TC reported TIMS showed obstacle detected at car 2604 'B3' door. Fault self-cleared and did not recu r at subsequent stations. Staff(DBG) checked and confirmed c ar 2604 'B3 door opened and closed normally. ~~~~~ 2604 TC reported TIMS showed obstacle detected at B3 door. Fault self-cleared and did not recur at subsequent stations. Staff(DBG) confirmed 2604 'B3 door opened and closed normally. CE checked & found 2604 B3 door for abnormality found-ok. TIMS did not show any obstacle detected. Depot 2604 B3 door operational check.  2604 B3 door roller worn - Replaced. Tested door operation(20x) for Open/close - OK. Security checked - OK. Checked door gap, door indication - OK. Chan SW/Aliff/Daniel/Redzwan 45191