What does '112303 – HI T-Exhaust A3' mean on my MTU MS150033/05E Engine and how can I resolve it?
- MMatthew EvansSep 12, 2025
If your MTU Engine shows the error '112303 – HI T-Exhaust A3', it means the exhaust temperature of this cylinder is too high compared to the average value. You may need to: 1. Check emission values. 2. Check ignition timing. 3. Check valve drive (exhaust valves do not close).







