What to do if I see HIHI T-Exhaust Mean error on my MTU 12 V 4000 Lx4?
- DDavid AguilarAug 18, 2025
If the weighted average of all individual exhaust gas temperatures is too high on your MTU Engine, you should first check the emission values. Then, check the ignition timing and finally check the valve drive, ensuring the exhaust valves are closing properly.