DTC P0088:00 [SKYACTIV-D 2.2]

id0102s4146100

DTC P0088:00

High pressure malfunction in common rail fuel pressure control system
DETECTION CONDITION
•  With the following conditions met, a condition has continued for 20 s in which the fuel pressure sensor output value is higher than the fuel pressure control target value by 20 MPa {204 kgf/cm2, 2901 psi}:
―  The following conditions continue for 2 s:
•  Battery voltage: 8 V or more
•  Fuel pressure control: Being performed
•  Change in target fuel pressure during half-rotation of crankshaft: −3 to 3 MPa {−30—30 kgf/cm2, −435—435 psi}
•  Fuel temperature: −25—75 °C {−13—167 °F}
•  Target fuel discharge amount from supply pump: Less than 10,000 mm3/rev
―  The following DTCs are not detected:
•  Fuel temperature sensor: P0181:00, P0182:00, P0183:00
•  Fuel pressure sensor: P0191:00, P0192:00, P0193:00
•  Suction control valve: P062A:00
Diagnostic support note
•  This is an intermittent monitor (fuel system).
•  The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
•  PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Increase the idle speed.
•  Inhibits engine-stop by operating the i-stop function.
•  PCM restricts engine-transaxle integration control.
POSSIBLE CAUSE
•  Fuel filter clogged
•  Suction control valve malfunction
•  Fuel pressure sensor malfunction
•  Fuel pipe perforation or breakage (improper connection)
•  Fuel pressure relief valve malfunction
•  PCM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED
•  Have the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (fuel system related) been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data and DIAGNOSTIC MONITORING TEST RESULTS on the repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition off, then ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Are any other PENDING CODEs and/or DTCs present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC TABLE [SKYACTIV-D 2.2].)
No
Go to the next step.
4
INSPECT FUEL FILTER
•  Inspect the fuel filter for clogging.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 9.
(See FUEL FILTER REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
5
INSPECT SUCTION CONTROL VALVE
•  Inspect the suction control valve.
•  Is there any malfunction?
Yes
Replace the suction control valve, then go to Step 9.
(See SUCTION CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
6
INSPECT FUEL PRESSURE SENSOR
•  Inspect the fuel pressure sensor.
•  Is there any malfunction?
Yes
Replace the common rail, then go to Step 9.
(See COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
7
INSPECT FUEL PIPE
•  Inspect the fuel pipe installation condition.
•  Is there any malfunction?
Yes
Install the fuel pipe properly, then go to Step 9.
No
Go to the next step.
8
INSPECT FUEL PRESSURE RELIEF VALVE
•  Inspect the fuel pressure relief valve.
•  Is there any malfunction?
Yes
Replace the common rail, then go to the next step.
(See COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
9
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the Drive Mode Type A.
•  Perform the Pending Trouble Code Access Procedure.
•  Is the PENDING CODE for this DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [SKYACTIV-D 2.2].)
No
DTC troubleshooting completed.