199003185 - U0001 CAN line error

The error is detected if the CAN is faulty, in other words there is a short circuit between the High and Low CAN, a short circuit to +Vbatt. of the Low CAN or a short circuit to earth of the High CAN (with detail Bus off), no messages from all the nodes (with detail Mute) or through a diagnostic test of the message frame with detection of the CAN controller broken (with detail condition recorded).

In the case of a fault at the CAN error code U0426 is also memorized and starting is inhibited

		Test results
1	ERROR DETAIL CHECK	All OK	Problems encountered	Operation
	Check on the diagnostic equipment that the detail for error U0001 is "BUS off"	Move on to Step 2	The detail is "condition recorded"	Replace the engine management control unit    Op. 1060G28 FUEL PRESSURE SENSOR ON FUEL MANIFOLD TO INJECTORS - R.R
			The detail is "Mute"	Move on to Step 3
2	CAN CHECK	All OK	Problems encountered	Operation
	Check that there are no connection faults between the other control units in the CAN In particular, that there are no open circuit or short circuit problems    See E1050 CAN CONNECTION LINES	End of diagnosis	There are faulty connections	Restore or, if necessary, replace the wiring
3	ENGINE CONTROL UNIT CONNECTION CHECK	All OK	Problems encountered	Operation
	Check that the CAN connections between the engine management control unit and the Body Computer are not faulty. In particular, that there are no open circuit or short circuit problems    See E1050 CAN CONNECTION LINES	End of diagnosis	There are faulty connections	Restore or, if necessary, replace the wiring