Volkswagen CJDA Workshop Manual page 47

Indicated on display
00072/P0048
Charge pressure control
valve, bank 1/charger1
Short to positive
00135/P0087
Pressure in fuel rail/fuel
system
Too low
00136/P0088
Pressure in fuel rail/fuel
system
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Possible cause of fault Possible effects
◆ Wire has short to
positive
◆ -N75- defective
◆ 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
Industriemotoren - Industrial Engines 2009 ▶
◆ Torque limiting
◆ Torque reduction or
shutdown
3
Fault remedy
– Check electrical con-
nection to actuator
– Checking fill level of
fuel tank
– Checking fuel system
⇒ P age 384
for leaks
– Check supplementary
fuel pump -V393-
⇒ P age 314
– Checking fuel pres-
sure regulating valve
⇒ P age
-N276- 391.
– Check return flow rate
from fuel pressure
regulating valve
⇒ P age 377
-N276-
– Checking fuel pres-
sure sender -G247-
⇒ P age
394.
– Check fuel metering
valve -N290-
⇒ P age 388
– 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
3 List of fault codes 31