Fault code description for oil pressure sensor for cylinder cut-out system, ME-SFI - AD07.61-P-4000-58B

Engine 113.960 up to 5/00 with code (479) cylinder cut-out system 

1	Fault code	P0520
2	Fault storage	after the end of the test period and faults
	Activation of malfunction indicator lamp for engine diagnosis	no activation
3	Frequency of the test	continuous
	Monitoring period	approx. 1 s
4	Checked signal or status	Signal line and signal of oil pressure sensor
5	Fault setting conditions  Limits	signal voltage must be between approx. 0.4 V and 4.6 V, otherwise short circuit or line interruption up to engine speed of 600 rpm, the oil pressure must be less than 5 bar (approx. 4.4 V) as of 1500 rpm, the oil pressure must be greater than 1.5 bar (approx. 1.6 V)
6		If the oil pressure sensor detects a constant level, e.g. 4 bar, it is not determined to be defective and this also leads to no limitation of the cylinder cut-out system.