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DTC P0093 FUEL SYSTEM
EC-1277
[YD (WITHOUT EURO-OBD)]
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EC
DTC P0093 FUEL SYSTEM PFP:17520
On Board Diagnosis Logic EBS011YC
DTC Confirmation Procedure EBS011YD
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and keep engine speed more than 4,000 rpm for at
least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1277, "
Diagnostic Proce-
dure" .
Diagnostic Procedure EBS011YE
1. CHECK FUEL TRANSPORT PUMP OPERATION
Perform Diagnostic Procedure for fuel transport pump. Refer to EC-1491
.
OK or NG
OK >> GO TO 2.
NG >> Follow the instruction of Diagnostic Procedure for fuel transport pump.
2. PERFORM FUEL PUMP LEARNING VALUE CLEARING
NOTE:
If the DTC is detected because of air mixed with fuel (i.e.: caused by lack of fuel), it may become normal by
performing following procedure.
With CONSULT-II
1. Turn ignition switch ON.
2. Perform Fuel Pump Learning value clearing. Refer to EC-1221, "
Fuel Pump Learning Value Clearing" .
3. Start engine and let it idle for at least 60 seconds.
4. Select “SELF-DIAG RESULT” mode with CONSULT-II.
5. Touch “ERASE”.
6. Perform EC-1277, "
DTC Confirmation Procedure" , again.
7. Is DTC detected again?
Yes or No
Yes >> GO TO 3.
No >> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0093 Fuel system leak
ECM detects a fuel system leak.
(The relation between the output voltage to the
fuel pump and input voltage from the fuel rail
pressure sensor is out of the normal range.)
● Fuel pump
● Fuel rail
● Fuel pipe
● Fuel rail pressure relief valve
● Air mixed with fuel
● Lack of fuel
● Fuel transport pump operation
SEF817Y
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