DTC P0088:00 [SKYACTIV-D 1.5]

id0102q2146100

DTC P0088:00

High fuel pressure malfunction in common rail fuel pressure control system
DETECTION CONDITION
•  With the following conditions met, a condition has continued for 15 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: −6 to 6 MPa {−61—61 kgf/cm2, −870—870 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 a continuous monitor (CCM).
•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Inhibits the auto DPF regeneration control.
•  Inhibits the compulsory DPF regeneration control.
•  Inhibits the EGR control.
•  PCM restricts engine-transaxle integration control. (ATX)
•  Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE
•  Fuel filter clogged
•  Fuel pressure relief valve malfunction
•  Suction control valve malfunction
•  Fuel pressure sensor malfunction
•  Fuel pipe perforation or breakage (improper connection)
•  Fuel leakage from fuel line or clogging
•  Supply pump malfunction
•  Poor fuel quality
•  PCM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the FREEZE FRAME DATA/snapshot data on the repair order.
—
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 1.5].)
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 12.
(See FUEL FILTER REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
(See FUEL FILTER DISASSEMBLY/ASSEMBLY [SKYACTIV-D 1.5].)
No
Go to the next step.
5
INSPECT FUEL PRESSURE RELIEF VALVE
•  Inspect the fuel pressure relief valve.
•  Is there any malfunction?
Yes
Replace the common rail, then go to Step 12.
(See COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Go to the next step.
6
INSPECT SUCTION CONTROL VALVE
•  Inspect the suction control valve.
•  Is there any malfunction?
Yes
Replace the suction control valve, then go to Step 12.
(See SUCTION CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Go to the next step.
7
INSPECT FUEL PRESSURE SENSOR
•  Inspect the fuel pressure sensor.
•  Is there any malfunction?
Yes
Replace the common rail, then go to Step 12.
(See COMMON RAIL REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Go to the next step.
8
INSPECT FUEL PIPE
•  Inspect the fuel pipe installation condition.
•  Is there any malfunction?
Yes
Install the fuel pipe properly, then go to Step 12.
No
Go to the next step.
9
INSPECT FOR FUEL LEAKAGE FROM FUEL LINE OR CLOGGING
•  Inspect the following fuel line for fuel leakage or clogging.
―  Between supply pump and common rail
―  Between common rail and fuel injector
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to Step 12.
No
Go to the next step.
10
INSPECT SUPPLY PUMP
•  Inspect the supply pump.
•  Is there any malfunction?
Yes
Replace the supply pump, then go to Step 12.
(See SUPPLY PUMP REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)
No
Go to the next step.
11
INSPECT FOR MALFUNCTION DUE TO POOR FUEL
•  Replace the fuel.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Access the ECT PID using the M-MDS.
•  Start the engine and idle it.
•  Wait until the ECT PID value is above 80 °C {176 °F}.
•  Wait for 1 min (idle).
•  Perform the Pending Trouble Code Access Procedure.
•  Is the PENDING CODE for this DTC present?
Yes
Go to the next step.
No
Advise the customer as to the change in the fuel used.
Go to Step 13.
12
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Access the ECT PID using the M-MDS.
•  Start the engine and idle it.
•  Wait until the ECT PID value is above 80 °C {176 °F}.
•  Wait for 1 min (idle).
•  Perform the DTC Reading Procedure.
•  Is the same 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.
13
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 1.5].)
No
DTC troubleshooting completed.