What aspect of the YDIS screen aids in diagnosing engine issues?

The aspect of the YDIS (Yamaha Diagnostic Imaging System) screen that significantly aids in diagnosing engine issues is the listing of faulty sensors in numeric code order. This functionality allows technicians to quickly identify specific problems by displaying error codes corresponding to detected faults within the engine's sensor system. By referencing these codes, technicians can efficiently narrow down which sensors are malfunctioning or which systems may be experiencing issues, leading to more targeted diagnostics and repairs.

Utilizing the numeric codes provided facilitates a systematic approach to troubleshooting, as each code is typically associated with a specific issue related to engine performance or sensor feedback. This makes it easier to determine the root cause of engine problems, resulting in effective resolutions and enhanced diagnostic efficiency.

The other options, while potentially useful, do not provide the same level of direct diagnostic assistance. For instance, real-time fuel efficiency and operation temperature data can be helpful in monitoring performance and understanding conditions but do not specifically pinpoint faulty components. Similarly, maintenance reminders are valuable for keeping track of routine checks but do not address immediate diagnostic needs related to engine issues.