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DTC P0088 FUEL SYSTEM EC-421 [YD (WITHOUT EURO-OBD)] C D E F G H I J K L M A EC DTC P0088 FUEL SYSTEM PFP:17520 On Board Diagnosis Logic EBS0153Z DTC Confirmation Procedure EBS01540 NOTE: WITH CONSULT-II 1. Start engine and warm it up to normal operating temperature. 2. Select “DATA MONITOR” mode with CONSULT-II. 3. Keep engine speed more than 2,000 rpm for at least 20 sec- 4. If DTC is detected, go to EC-421, "Diagnostic Procedure" . Diagnostic Procedure EBS01541 1. CHECK FUEL RAIL PRESSURE SENSOR Refer to EC-456, "Component Inspection" . OK or NG OK >> GO TO 2. NG >> Replace fuel rail. 2. CHECK FUEL INJECTOR Refer to EC-463, "Component Inspection" . OK or NG OK >> GO TO 3. NG >> Replace fuel injector. 3. CHECK FUEL PUMP Refer to EC-547, "Component Inspection" . OK or NG OK >> GO TO 5. NG >> GO TO 4. 4. REPLACE FUEL PUMP 1. Replace fuel pump. 2. Perform Fuel Pump Learning Value Clearing. Refer to EC-368, "Fuel Pump Learning Value Clearing" . >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause P0088 Fuel rail pressure too high Fuel pressure is too much higher than the speci- ● Fuel pump ● Fuel injector ● Fuel rail pressure sensor SEF817Y |