Indicated on display
Possible cause of fault Possible effects
Fault remedy
Low performance
◆
Diesel oxidising cata-
lytic converter clog-
ged with sulphur
◆
Difference between
exhaust gas tempera-
ture ahead of turbine
and downstream from
diesel oxidising cata-
lytic converter too low
during regeneration
– Check -G212-
, check
exhaust gas recircula-
tion valve -N18-
– Check exhaust gas re-
circulation system
◆
On 1st occurrence,
repeat service regen-
eration
◆
On repeated occur-
rence, note the fol-
lowing:
– Check temperature
sensors ahead of tur-
bine and downstream
from diesel oxidising
catalytic converter for
plausibility
– If OK, check air mass
meter for plausibility
– If OK, check exhaust
system for leaks
– If OK, check injection
system
– If OK, check whether
high-pressure exhaust
gas recirculation valve
is stuck on open posi-
tion or whether throttle
valve is jammed
– If OK, renew oxidising
catalytic converter
01132/P046C
Exhaust gas recirculation
potentiometer
Implausible signal
● Open circuit or line
short-circuit
● -G212- defective
◆
None
– Clean valve, renew as
necessary
01281/P0501
Vehicle speed signal
3
Industriemotoren - Industrial Engines 2009
▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
52
Repair Group 01 - Vehicle self-diagnosis