After fine tuner already the lambda at 50%load (420 NOX ) we are step up load at 100% the lambda 1.820(380 NOX) we was found misfire 19%.
After that The engine alarm A1044 EXH. Gas temp deviation high, A2060 Cylinder 20 deviation high but no warning about this before alarm.
We visual check the cylinder#20 and start the engine can run but the EXH. Temperature cyl#20 low. Turn off switch the engine for check Cyl#20.