Yanmar 4BY - Page 272

TROUBLESHOOTING
BY Service Manual
13-11
Trouble Codes
P0088
Fuel Rail Pressure
System Deviation
Fuel rail pressure out of range
reduce or
shut off
depends
on fault
alarm
P0089
Fuel Rail Pressure
System Deviation
Fuel rail pressure out of range yes yes alarm
P0090
Fuel Pressure
Control Valve
Not connected / valve failure no no alarm
Fuel Rail Pressure
System 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
P0122
Throttle Signal
Both throttle signals are missing / short circuit to
Ground
1600 yes alarm
Throttle Signal Throttle signal 1 is missing / short circuit to Ground reduce yes alarm
P0123
Throttle Signal Both throttle signals are short circuited to B+ 1600 yes alarm
Throttle Signal Throttle signal 1 short circuit to B+ reduce yes alarm
P0182
Fuel Temperature
Sensor
Short circuit to B+ reduce yes alarm
P0183
Fuel Temperature
Sensor
No connection / short cuircuit to Ground reduce yes alarm
P0192
Fuel Rail Pressure
Sensor
Short circuit to Ground reduce yes alarm
P0193
Fuel Rail Pressure
Sensor
No connection / short circuit B+ reduce yes alarm
P0201 Injector No. 1 Open circuit / short circuit to Ground reduce yes alarm
P0202 Injector No. 2 Open circuit / short circuit to Ground reduce yes alarm
P0203 Injector No. 3 Open circuit / short circuit to Ground reduce yes alarm
P0204 Injector No. 4 Open circuit / short circuit to Ground reduce yes alarm
P0205 Injector No. 5 Open circuit / short circuit to Ground reduce yes alarm
P0206 Injector No. 6 Open circuit / short circuit to Ground reduce yes alarm
Code Fail Mode
Run or
Condition
Engine
Can
Start
Check
Engine
Alarm