Indicated on display
Possible cause of fault Possible effects
Fault remedy
Too high
◆
Fuel level too low
◆
Leak in fuel system
◆
Fault in low-pressure
fuel system
◆
Fault in high-pressure
fuel system
◆
Metering unit is de-
fective
◆
Glow period warning
lamp -K29- lights up
◆
Exhaust emissions
warning lamp -K83-
lights up
◆
Reduced performance
◆
Increased exhaust
emissions
◆
Torque reduction or
shutdown
– Checking fill level of
fuel tank
– Checking fuel system
for leaks
– Check supplementary
fuel pump -V393-
– Checking fuel pres-
sure regulating valve
-N276-
.
– Check return flow rate
from fuel pressure
regulating valve
-N276-
– Checking fuel pres-
sure sender -G247-
.
– Check fuel metering
valve -N290-
– Check CR system for
leaks
– Check operation of
low-pressure fuel sys-
tem
– Check operation of
high-pressure pump
– Check operation of
metering unit and
pressure regulating
valve
00144/P0090
Fuel metering valve
-N290-
3
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
32
Repair Group 01 - Vehicle self-diagnosis