DTC P0088:00 [PCM (SKYACTIV-G)]
DTC P0088:00 [PCM (SKYACTIV-G)]
SM2334402
id0102t4146100
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Note
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• To determine the malfunctioning part, proceed with the diagnostics from “Function Inspection Using M-MDS”.
Details On DTCs
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Description |
Fuel pressure sensor circuit range/performance problem |
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Detection condition
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Determination conditions
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• The actual fuel pressure becomes higher than the target fuel pressure by 1.2 MPa {12 kgf/cm2, 174 psi} while the fuel pressure feedback amount is maintained high.
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Preconditions
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• Engine speed: 500 rpm or more *1
• The following DTCs are not detected:
*1: Standard can be verified by displaying PIDs using M-MDS
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Malfunction determination period
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• 5 s period
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Drive cycle
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• 1
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Self test type
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• CMDTC self test
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Sensor used
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• Fuel pressure sensor
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Fail-safe function
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• Limits intake air amount
• Stops high pressure fuel pump control
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Vehicle status when DTCs are output
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• Not applicable
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Possible cause
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• High pressure fuel pump connector or terminals malfunction
• Fuel pressure sensor connector or terminals malfunction
• PCM connector or terminals malfunction
• Fuel pressure sensor malfunction
• Fuel injector malfunction
• High pressure fuel pump malfunction
• PCM malfunction
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System Wiring Diagram
• Not applicable
Function Explanation (DTC Detection Outline)
• The PCM calculates the target fuel pressure appropriate to the engine conditions relative to the actual fuel pressure based on the fuel pressure sensor signal and provides feedback to the high pressure fuel pump control. If the difference between the actual fuel pressure and the target fuel pressure relative to the feedback amount is large, the PCM determines a malfunction in the fuel pressure sensor and stores a DTC.
Repeatability Verification Procedure
1. Warm up the engine to allow the engine coolant temperature to reach 80 °C {176 °F} or more.
2. Start the engine and leave it idling for 1 min.
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Note
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• The target calculated by the PCM is increased and the DTC P0088:00 determination conditions are met by repeating the Step 3 operation.
3. Shift to 1st gear and accelerate/decelerate the vehicle to 30—50 km/h {19—31 mph}.
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Note
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• Match the engine coolant temperature in the recorded freeze frame data/snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.
4. Try to reproduce the malfunction by driving the vehicle for 5 min based on the values in the freeze frame data/snapshot data.
PID Item/Simulation Item Used In Diagnosis
PID/DATA monitor item table
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PIDs |
Reference |
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FUEL_PRES
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Function Inspection Using M-MDS
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Step |
Inspection |
Results |
Action |
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1
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PURPOSE: VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
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Yes
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Perform repair or diagnosis according to the available 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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2
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PURPOSE: IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is the DTC P0088:00 on freeze frame data?
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Yes
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Go to the next step.
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No
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Go to the troubleshooting procedure for DTC on freeze frame data.
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3
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PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data.
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—
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Go to the next step.
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4
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PURPOSE: INSPECT FOR OTHER RELATED DTCs
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
Go to the next step.
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No
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Go to the next step.
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5
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PURPOSE: VERIFY CONNECTOR CONNECTIONS
• Start the engine.
• Access the FUEL_PRES PID using the M-MDS. (See PID/DATA MONITOR INSPECTION.)
• Does the PID value fluctuate when the following connectors are shaken?
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Yes
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Repair or replace the applicable wiring harness or connector parts.
Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.
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No
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Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
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Troubleshooting Diagnostic Procedure
Intention of troubleshooting procedure
• Step 1
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― Perform a unit inspection of the fuel pressure sensor.
• Repair completion verification
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― Verify that the primary malfunction is resolved and there are no other malfunctions.
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Step |
Inspection |
Results |
Action |
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1
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PURPOSE: INSPECT FUEL PRESSURE SENSOR FOR MALFUNCTION
• Inspect the applicable part. (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See FUEL PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
• Is the part normal?
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Yes
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Go to the next step.
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No
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Repair or replace the malfunctioning location and perform the repair completion verification.
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Repair completion verification 1
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PURPOSE: VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory. (See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Is the same Pending DTC present?
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Yes
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
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No
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Go to the next step.
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Repair completion verification 2
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PURPOSE: VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection. (See DTC INSPECTION.)
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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