What should I do if my MTU 12V 4000 L32 F shows HI T-Exhaust A9 error?
- CChristopher EsparzaSep 12, 2025
If the individual exhaust gas temperature of a cylinder is too high compared to the weighted average in your MTU Engine, resulting in a 'HI T-Exhaust' error, you should check the emission values, ignition timing, and valve drive, ensuring that the exhaust valves are closing correctly.