COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S72
9Y3200007CRS0110US0
Name Fuel leak (in high pressured fuel system)
ISO 14229
P-Code
P0093
J1939-73
SPN 1239
FMI 1
SPN Name
SAE J1939 Table C1
Engine Fuel Leakage 1
DTC Name Fuel leak (in high pressured fuel system)
Detection item
• Lack of fuel (This error occurs when the engine stalls due to lack of fuel and air gets
mixed in the fuel line)
• Fuel leak from high pressured fuel system
(Fuel consumption is calculated from the difference of fuel pressure of before and after
the injection, and the error will be detected when excess fuel consumption is found)
DTC Set
Preconditions
• Battery voltage is normal
• Sensor supply voltage VCC# is normal
• Rail pressure sensor is normal
• Suction control valve (SCV) is normal
• Injector and injector drive circuit are normal
• NE signal is active [Engine is operating (700 min
-1
(rpm) or higher)]
• No DTC of P0087, P0088, P0089
DTC set parameter
(a): the flow volume which is calculated from the difference of rail pressure (decrease)
(b): total volume of injection and leakage
Fuel leak is judged with following conditions:
• In case, engine speed is more than 1200 min
-1
(rpm):
When the difference of (a) and (b) is 120 mm
3
/st or above, (a) is higher than (b), and
fuel leak is not from opening pressure limiter
• In case, engine speed is 1200 min
-1
(rpm) or less:
When the difference of (a) and (b) is 400 mm
3
/st or above, (a) is higher than (b), and
fuel leak is not from opening pressure limiter
Time to action or
number of error
detection
• One time or more
Limp Home Action
by engine ECU
(system action)
• Output limitation: Approximately 50 % of normal condition
• Speed limitation (Accelerator limitation: 50 %)
•EGR stop
• Intake throttle 100 % open
Behaviour During
Malfunction
• Insufficient output
• Worsening exhaust gas performance
• Engine stops in some case
Engine Warning
Light
•ON
Recovery from
error
• Key switch turn OFF
Delay time for
recovery
–
Remark • To minimize PM emission to DPF
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