Diagnostic Trouble Code Table
Code
Part or System
Mode
Run Or
Condition
Engine
Can
Start
Check
Engine
Alarm
No
Code
Coolant Temp
Under 0°C (32°F)
1000 rpm
yes
no
No
Code
Coolant Temp
Over 108°C (226°F)
reduce
yes
no
No
Code
Coolant Temp
Over 110°C (230°F)
reduce
yes
alarm
No
Code
Charge Air Temp
Over 110°C (230°F)
reduce
yes
no
No
Code
Boost Pressure
Reading
4BY2 - over 1.9 bar (27.5 psi)
(relative*) or 2.9 bar (42.0 psi)
(absolute**)
6BY2 - over 2.3 bar (33.3 psi)
(relative*) or 3.3 bar (42.9 psi)
(absolute**)
reduce
yes
alarm
No
Code
Fuel Temperature
Over 90°C (194°F)
reduce
yes
no
No
Code
Neutral Switch
Only in case of analog throttle
or in case of CAN-fault
(U0001), wrong configuration -
neutral position
no
no
alarm
P0001
Fuel Metering Unit
Not connected
reduce
yes
alarm
P0003
Fuel Metering Unit
Short circuit to Ground
no
no
alarm
P0004
Fuel Metering Unit
Short circuit to B+
reduce
yes
alarm
P0087
Rail Pressure Gover-
nor Deviation
Fuel rail pressure out of range
reduce or
shut off
depends
on fault
alarm
P0088
Rail Pressure Gover-
nor Deviation
Fuel rail pressure out of range
reduce or
shut off
depends
on fault
alarm
P0089
Rail Pressure Gover-
nor Deviation
Fuel rail pressure out of range
yes
yes
alarm
P0090
Fuel Pressure Control
Valve
Not connected
no
no
alarm
Rail Pressure Gover-
nor Deviation
Fuel rail pressure out of range
reduce
yes
alarm
P0091
Fuel Pressure Control
Valve
Short circuit to Ground
reduce
yes
alarm
P0092
Fuel Pressure Control
Valve
Short circuit to B+
no
no
alarm
P0112
Charge Air Temp
Over 125°C (257°F)
reduce
yes
alarm
Charge Air Temp
Sensor
Short circuit to B+
reduce
yes
alarm
P0113
Charge Air Temp
Under -20°C (-4°F)
reduce
yes
alarm
Charge Air Temp
Sensor
No connection / short circuit to
Ground
reduce
yes
alarm
P0117
Coolant Temp Sensor
Short circuit to B+
reduce
yes
alarm
P0118
Coolant Temp Sensor
No connection / short circuit to
Ground
reduce
yes
alarm
TROUBLESHOOTING
BY Series Operation Manual
65
© 2008 Yanmar Marine International