What to do if MTU 8V 4000 Lx2 x Engine displays HI T-Exhaust A9 error?
- EElaine WeberSep 12, 2025
If your MTU Engine displays a HI T-Exhaust A9 error, it indicates that the exhaust temperature of that cylinder is too high compared to the average. You can resolve this by checking the emission values, ignition timing, and valve drive, ensuring that exhaust valves are closing correctly.