[Train Fault] SMRT C151B (633/634) at Yishun

This train I took on my way home happened to be faulty. The doors closed and opened again. This repeated a few times more before it was forced to withdraw from service. You can see the faulty part at 2:21, where 1 of the trains doors remained open as the train left for the sidings.
Apologies for the muffled video sound from about 50 secs onwards, no idea why my phone is like that :( it always happens without my earpiece plugged in when recording videos. My earpiece was problematic that day such that no sound can be captured at all if I record videos with it plugged in so I didn't use and replaced it with a new one afterwards.
Featured train: Kawasaki Heavy Industries & CRRC Qingdao Sifang C151B 633/634
TRN: ???
Date and time: 19 December 2022, 7.29pm
Line: North South Line
Terminus: Jurong East → Yishun
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[@sg5155s_zt]

2:21 car 1634 door b1 door stuck & not closed after arrived Yishun.

[@sgxploresmrt]

That's exactly why it have to be withdrawn from service for safety. The door is faulty.

[@sg5155s_zt]

@@sgxploresmrt yah

[@SMDBrosI]

Who was it replaced by?

[@SG6298G]

C151B or C151C?

[@sgxploresmrt]

It's C151B. Read the title

[@SG6298G]

@@sgxploresmrt yeah saw alr