Indicated on display
Possible cause of fault Possible effects
Fault remedy
08488/P2128
Accelerator pedal posi-
tion sender 2
Signal too large
◆
Wire open circuit or
wire has short to
earth
◆
-G185- defective
◆
Torque is considerably
reduced above
3000 rpm
– Electrical test: con-
nectors, short to posi-
tive in cable
08504/P2138
Accelerator pedal posi-
tion senders 1/2
-G79+G185-
Implausible signal
◆
Open circuit or line
short-circuit
◆
-G79/G185- defective
◆
Torque is considerably
reduced above
3000 rpm
– -G79- Check.
– Electrical test: con-
nectors, check cables
for contact resistance
between sensors 1
and 2.
– The sensors may
have to be renewed
08518/P2146
Voltage supply of injec-
tor(s) A
Open circuit
◆
Open circuit or line
short-circuit
◆
-N30...N33- defective
◆
Engine stalls
– -N30...N33- Check.
– Check wires (high and
low) of injectors for
short to positive/earth.
– Check one high wire
of bank A for short-cir-
cuit to another high
wire of bank A. If OK,
check injectors. If OK,
renew ECU.
08521/P2149
Voltage supply of injec-
tor(s) B
Open circuit
◆
Open circuit or line
short-circuit
◆
-N30...N33- defective
◆
Engine stalls
– -N30...N33- Check.
– Check wires (high and
low) of injectors for
short to positive/earth.
– Check one high wire
of bank A for short-cir-
cuit to another high
wire of bank A. If OK,
check injectors. If OK,
renew ECU.
3
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
72
Repair Group 01 - Vehicle self-diagnosis