What to do if the MTU 20V4000L32FNER shows HIHI T-Exhaust Mean error?
- JjcruzAug 18, 2025
If the MTU Engine displays a HIHI T-Exhaust Mean error, it means the weighted average of all cylinder exhaust gas temperatures is too high. You should check the emission values, ignition timing, and valve drive, ensuring the exhaust valves are closing properly.





