P0404 EGR valve (excessive offset)

			Test results
1	COMPONENT CONCERNED	CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR valve connections	Check that the connections are not faulty	Go to Step 2	Faulty connections	Restore the correct connections
2	COMPONENT CONCERNED	WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR valve connections	Check the wiring continuity	Go to Step 3	Faults in the continuity of the wiring	Restore the correct continuity of the wiring
3	COMPONENT CONCERNED	WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR valve connections	Check that the wiring is correctly insulated	Go to Step 4	Wiring insulation not correct	Restore the correct insulation for the wiring
4	COMPONENT CONCERNED	EGR VALVE OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR Valve	Check that the EGR valve is working properly by carrying out the See Test 1080CB E.G.R. SOLENOID FUNCTIONAL TEST	Go to Step 5	EGR valve not working correctly	Replace the EGR valve Op. 1080C24 E.G.R. SYSTEM SOLENOID - R + R
5	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	High pressure EGR valve	Connect the diagnostic tool to the powertrain control module, go to the “ACTUATORS” menu and launch procedure “EGR DC Motor Offset Learning”. Check the outcome of the test	Go to Step 6	The test did NOT have a positive outcome	Replace the high pressure EGR valve Op. 1080C24 E.G.R. SYSTEM SOLENOID - R + R
6	COMPONENT CONCERNED	CHECK USING DIAGNOSIS EQUIPMENT	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	High pressure EGR valve	Check for other error codes stored in the powertrain control module	End of diagnosis	Additional errors stored in the Powertrain Control Module	Follow the instructions provided by the diagnostic tool to resolve the errors