What to do if I see HIHI T-Exhaust Mean error on my MTU 12V 4000 L32 F Engine?
- FfaulknerjacquelineAug 19, 2025
If the weighted average of all individual exhaust gas temperatures is too high, it can trigger the HIHI T-Exhaust Mean error on your MTU Engine. To address this, you should check the emission values, ignition timing, and valve drive to ensure the exhaust valves are closing properly.