How to Say "to malfunction" in Spanish
The Spanish word for “to malfunction” is “fallar” — B1 level. This is a very common word in everyday Spanish.
English → SpanishB1
verbB1
machine, system

Examples
La computadora falló justo antes de guardar el archivo.
The computer malfunctioned right before saving the file.
El motor de la nave empezó a fallar a mitad del viaje.
The ship's engine started to fail halfway through the trip.
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