2582446 - K50 I.E. FAILURE WARNING LIGHT ON

The engine management control unit warning light remains on. The CODE warning light comes on and goes out.
The CODE warning light going out means that the dialogue between the two control units has gone well. The engine management control unit warning light remaining on permanently means there is an error in the system
Results of the tests
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
1.2 8vConnect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there are no errors in the control unitError detected in defective control unitReplace control unit Op.   1056B82  Search for the fault starting from another symptom'
1.9 DIESELConnect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there are no errors in the control unitError detected in defective control unitReplace control unit Op.   1060D80  Search for the fault starting from another symptom'