DTC P0088:00 [MZR-CD 2.2]
id0102f3146100
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DTC P0088:00 |
Fuel pressure system too high |
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DETECTION CONDITION
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• The PCM monitors the fuel pressure in the common rail from the fuel pressure sensor while the engine running. If the fuel pressure is more than 217 MPa {2,213 kgf/cm2, 31,473 psi}, the PCM determines that the fuel pressure is too high.
MONITORING CONDITIONS
Diagnostic support note
• The MIL 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.
• The DTC is stored in the PCM memory.
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POSSIBLE CAUSE
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• Fuel pipe improper connection on fuel tank
• Fuel leakage or clogged fuel line
• Suction control valve (built-in supply pump) malfunction
• Fuel pressure sensor malfunction
• Common rail malfunction
• PCM malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
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Yes
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Go to the next step.
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No
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Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
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2
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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3
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VERIFY CURRENT INPUT SIGNAL STATUS IS CONCERN INTERMITTENT OR CONSTANT
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Perform the KOER self test.
• Is the PENDING CODE for this DTC present?
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Yes
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Go to the next step.
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No
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Intermittent concern exists.
• Perform the “INTERMITTENT CONCERN TROUBLESHOOTING” procedure.
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4
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VERIFY RELATED PENDING CODE AND/OR DTC
• Switch the ignition to off, then to ON (engine off).
• Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
• Is the PENDING CODE/DTC P0191:00, P0192:00, P0193:00 or P062A:00 also present?
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Yes
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Go to the applicable DTC inspection.
(See DTC P0191:00 [MZR-CD 2.2].)
(See DTC P0192:00 [MZR-CD 2.2].)
(See DTC P0193:00 [MZR-CD 2.2].)
(See DTC P062A:00 [MZR-CD 2.2].)
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No
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Go to the next step.
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5
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INSPECT FUEL PIPE CONNECTION ON FUEL TANK
• Inspect the fuel pipes for supply and return connection at the fuel tank.
• Are the fuel pipes connected properly?
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Yes
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Go to the next step.
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No
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Reconnect the fuel pipes properly, then go to Step 10.
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6
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INSPECT FUEL LINE
• Switch the ignition to off.
• Inspect for fuel leakage or clogging in the following fuel lines for each cylinder:
• Is there any malfunction?
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Yes
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Repair or replace the malfunctioning part according to the inspection results, then go to Step 10.
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No
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Go to the next step.
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7
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INSPECT SUCTION CONTROL VALVE
• Inspect the suction control valve.
• Is there any malfunction?
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Yes
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Replace the supply pump, then go to Step 10.
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No
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Go to the next step.
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8
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INSPECT FUEL PRESSURE SENSOR
• Inspect the fuel pressure sensor.
• Is there any malfunction?
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Yes
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Replace the common rail, then go to Step 10.
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No
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Go to the next step.
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9
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INSPECT COMMON RAIL
• Inspect the common rail.
• Is there any malfunction?
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Yes
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Replace the common rail, then go to the next step.
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No
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Go to the next step.
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10
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine.
• Perform the KOER self test.
• Is the PENDING CODE for this DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to the next step.
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11
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VERIFY AFTER REPAIR PROCEDURE
• Perform the “AFTER REPAIR PROCEDURE”.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD 2.2].)
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No
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DTC troubleshooting completed.
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