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DTC P1274 FUEL PUMP
EC-1723
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P1274 FUEL PUMP PFP:16700
Description BBS002EL
To control the amount of the fuel inhalation of the fuel pump, a plunger is built into the fuel pump. When the
amount of the fuel inhalation of fuel increases, the fuel pump raises the fuel exhalation pressure. As a result,
the fuel injection pressure is raised. When the load of the engine increases, the ECM sends a signal to the fuel
pump to raise the injection pressure.
CONSULT-II Reference Value in Data Monitor Mode BBS002EM
Specification data are reference values.
On Board Diagnosis Logic BBS002EN
NOTE:
If DTC P1274 is displayed with DTC P0652 or P0653, first perform trouble diagnosis for DTC P0652 or
P0653. Refer to EC-1691, "
DTC P0652, P0653 SENSOR POWER SUPPLY" .
DTC Confirmation Procedure BBS002EO
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. Tuning ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let idle for at least 5 seconds.
4. If DTC is detected, go to EC-1726, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine and let idle for at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-1726, "
Diagnostic Procedure" .
MONITOR ITEM CONDITION SPECIFICATION
PUMP CURRENT
● Engine: After warming up
● Air conditioner switch: OFF
● Shift lever: Neutral position
● No load
Idle 1,700 - 1,900 mA
2,000 rpm 1,600 - 1,800 mA
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1274
1274
Fuel pump protection
Fuel pressure is too much higher than the target
value.
● Harness or connectors
(The fuel pump circuit is open or
shorted.)
● Fuel pump
● Fuel rail pressure sensor
SEF817Y
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