199003081 - P0401 EGR valve

This error is detected if the actual value of the exhaust gas recirculation flow is less than the nominal value of the exhaust gas recirculation flow. As a result, the exhaust gas recirculation valve is switched off and the supercharging pressure can longer be controlled and the quantity of fuel injected is reduced.

		Test results
0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Check that the engine oil level is correct    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check that the air intake/vacuum circuit is working properly by carrying out the    See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECKCheck the operation of the low pressure supply circuit by carrying out the    See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECK	Move on to Step 1	Oil level incorrect	Restore the correct engine oil level    Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1	EGR OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the EGR valve is working properly by carrying out the    See Test 1080CB EGR SOLENOID OPERATION CHECK	End of diagnosis	-	-