DTC P2456:00 [PCM (SKYACTIV-X)]
id0102u9154000
Details On DTCs
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Description |
GPF pressure sensor: Output malfunction |
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Detection condition
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Determination conditions
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• The PCM detects that the deviations of the maximum output value and the minimum output value of the GPF pressure sensor are less than the specified values for the specified number of times.
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Preconditions
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• Barometric pressure: 70 kPa {0.71 kgf/cm2, 10 psi} or more*1
• Engine coolant temperature: 60 °C {140 °F} or more*1
• Ambient air temperature: -10 °C {14 °F} or more*1
• Engine speed: 500 rpm or more*1
• Exhaust shutter valve angle: 95 % or more (Australian, European (L.H.D. U.K.) specs.)
• The following DTCs are not detected:
*1: Standard can be verified by displaying PIDs using M-MDS
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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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• GPF pressure sensor
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Fail-safe function
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• Stops the EGR control.
• Inhibits the fuel cut control.
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Vehicle status when DTCs are output
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• A message related to the gasoline particulate filter is indicated on the display.
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Possible cause
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• GPF pressure sensor connector or terminals malfunction
• GPF pressure sensor malfunction
• PCM malfunction
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Function Explanation (DTC Detection Outline)
Repeatability Verification Procedure
PID Item/Simulation Item Used In Diagnosis
PID/DATA monitor item table
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Item (definition) |
Reference |
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GPF_DIF_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: 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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3
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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
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Step |
Inspection |
Results |
Action |
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1
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INSPECT GPF PRESSURE SENSOR HEATER FOR MALFUNCTION
• Inspect the applicable part.
• 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.
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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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