Final answer:
An amber FAULT light in the ENG PUMP pb indicates a problem with the aircraft's engine fuel pump, requiring attention but not immediate action, as part of the airplane's system monitoring.
Step-by-step explanation:
An amber FAULT light in the ENG PUMP push button (pb) typically indicates that there is an issue with the respective engine fuel pump in aircraft systems. This warning light is part of an airplane's electronic centralized aircraft monitor (ECAM) system or engine indication and crew alerting system (EICAS), depending on the aircraft type. An amber or yellow light generally signifies a caution or advisory that action should be taken, or that there is an abnormal condition needing attention. It is not as severe as a red warning, which indicates an immediate action is required, but it nonetheless suggests the aircraft's system has detected a fault with the engine pump, such as potential low pressure, a temperature issue, or a mechanical failure.