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EC-1428
[YD (WITHOUT EURO-OBD)]
DTC P1274 FUEL PUMP
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis Logic EBS01249
DTC Confirmation Procedure EBS0124A
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-1430, "
Diagnostic Procedure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1274 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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