What to do if HI T-Exhaust A9 error appears on MTU Engine?
- SStephanie OrtizSep 12, 2025
If the exhaust temperature of a cylinder is too high compared to the average on your MTU Engine, begin by checking the emission values. Proceed by inspecting the ignition timing and verifying the valve drive to ensure the exhaust valves are closing correctly. This issue arises because the exhaust temperature of the specific cylinder is excessively high relative to the average.