199003155 - P0604 Control unit faulty (RAM)

The error is detected after checking individual data (written values different from read values), after checking the address or after a writing test on the engine RAM

		Test results
1	ERRORS CHECK	All OK	Problems encountered	Operation
	Check whether any of the following errors are present using the diagnostic equipment:- P1301- U0001- U0426- U1700	Move on to Step 3	Error P1301 is present	Move on to Step 2
			Error U0001 is present	Continue as instructed in the    See table U0001 CAN line error
			Error U0426 is present	Memorise the CODE. If it is not possible, replace the engine control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
			Error B1700 is present	Continue as instructed in the    See table U1700 CAN network (NCM - NBC)
2	IMA CLASSIFICATION	All OK	Problems encountered	Operation
	In the Configurations section on the diagnostic tester, rerun the IMA classification and ensure it is successful	End of diagnosis	The classification is unsuccessful	Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R
3	CONTROL UNIT REPLACEMENT	All OK	Problems encountered	Operation
	Replace the engine management control unit    Op. 1060G80 DIESEL ELECTRONIC INJECTION CONTROL UNIT - R.R	End of diagnosis	-	-