P0520 Oil pressure switch

			Test results
1	COMPONENT CONCERNED	CONNECTIONS CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Connections to oil pressure switch	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
	Oil pressure switch wiring	Check the wiring continuity	Go to Step 3	Faults in the continuity of the wiring	Restore the correct continuity for the wiring
3	COMPONENT CONCERNED	WIRING CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Oil pressure switch wiring	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	OIL PRESSURE WARNING LIGHT SWITCH OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	switch for oil pressure warning light	Check that the engine oil pressure warning light switch is working correctly	End of diagnosis	Switch broken	Replace the switch Op. 1084A44 SENDER UNIT FOR ENGINE OIL PRESSURE - R + R