A continuous amber ENG ANTI-ICE FAULT light indicates.

A continuous amber ENG ANTI-ICE FAULT light serves as an important alert to the flight crew regarding potential issues with the engine anti-ice system. The correct answer indicates that there is a disagreement between the actual position of the valve and the position that has been selected by the pilot. This can be critical because it suggests that the system is not operating as intended, which could lead to ice forming on the engine and negatively impacting performance.

When the valve position does not match the selected input, it raises concern for the safe operation of the aircraft, especially in icing conditions where anti-ice functionality is vital. Understanding this alert helps pilots take necessary actions to ensure safety during flight operations, particularly in environments where ice formation poses a significant risk.

The other options relate to different issues that might manifest in other warning indicators but do not accurately describe the meaning of the ENG ANTI-ICE FAULT light. For instance, low pressure or high temperature would entail different types of faults that would trigger other specific alerts, rather than the position disagreement indicated by the amber light.