P0409 EGR position sensor

			Test results
1	COMPONENT CONCERNED	CHECK EGR POSITION SENSOR ELECTRICAL CONNECTIONS	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR position sensor wiring	Check for a short circuit to Vbatt. on the EGR position sensor wiring	Go to Step 2	Presence of short circuit to Vbatt.	Restore correct insulation to battery positive
2	COMPONENT CONCERNED	CHECK EGR POSITION SENSOR ELECTRICAL CONNECTIONS	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR position sensor wiring	Check for a short circuit to earth on the EGR position sensor wiring	Go to Step 3	Presence of short circuit to earth	Restore correct insulation to earth
3	COMPONENT CONCERNED	CHECK EGR POSITION SENSOR ELECTRICAL CONNECTIONS	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	EGR position sensor wiring	Check for presence of an open circuit to earth on the EGR position sensor wiring	Go to Step 4	Presence of open circuit	Restore the correct connections
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
	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