DTC P0457:00 [PCM (SKYACTIV-G)]
DTC P0457:00 [PCM (SKYACTIV-G)]
SM2334440
id0102t4301300
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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-filler cap installation malfunction |
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Detection condition
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Determination conditions
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• Hole of 0.09 in (2.25 mm) or more in evaporative gas passage
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Preconditions
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• Evaporative gas flow amount: Exceeds 10,000 cm3/min or fuel tank vacuum is high
• Fuel tank pressure: −4,340.2—4,030.1 Pa {−442.57—410.95 kgf/m2, −0.62949—0.58452 psi} *1
• IAT sensor No.1: 4.44—43.33 °C {40.0—109.9 °F} *1
• Vehicle speed: 64—145 km/h {40.0—90.0 mph} *1
• Barometric pressure: 72.23 kPa {0.7365 kgf/cm2, 10.48 psi} or more *1
• Period ignition is switched off before engine starts: 210 min or more
• Fuel level in fuel tank: 15—85 % *1
• Minimum value of intake manifold vacuum: 4 kPa {0.04 kgf/cm2, 0.6 psi} or more
• Minimum value of intake air amount: more than 2 g/sec
• Battery voltage: more than 11 V *1
• 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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• 2
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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 tank pressure sensor
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Fail-safe function
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• Not applicable
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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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• Missing or loose fuel filler cap
• Fuel filler cap malfunction
• PCM malfunction
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System Wiring Diagram
• Not applicable
Function Explanation (DTC Detection Outline)
• The PCM closes the purge solenoid valve and CV solenoid valve while the vehicle is being driven, and seals the fuel tank. By opening the purge solenoid valve after sealing the fuel tank, evaporative gas in the fuel tank is inducted into the intake manifold, fuel tank pressure is reduced, and the pressure change of the fuel tank is measured by the fuel tank pressure sensor. If the pressure of the fuel tank does not reach the target vacuum after the specified time has elapsed since the pressure was measured, the PCM determines that there is an evaporative gas leakage. If the PCM determines that refueling was performed before the engine starts, according to the result of the refueling determination, the PCM determines that the fuel-filler cap is open and stores DTC P0457:00 (if PCM determines that refueling is not performed, it stores DTC P0455:00).
• If the fuel tank level increases after the engine starts, the PCM determines that refueling is performed by comparing the fuel tank level before one drive cycle with the fuel tank level after engine start.
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Repeatability Verification Procedure
1. Set the remaining fuel quantity in the fuel tank between 30—85 %.
2. Verify that OBD-II information (such as freeze frame data) has been obtained and recorded.
3. Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC.)
4. Start the engine and switch the ignition off after 5 s have elapsed.
5. Leave the vehicle for 6 hours or more.
6. Start the engine and leave it idling for 2 min.
7. Drive the vehicle for 30 min at a speed of 50 km/h {31 mph} or more (to increase temperature in fuel tank and generate evaporative gas).
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Note
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• If driving the vehicle for 30 min at a speed of 50 km/h {31 mph} or more is not feasible, the vehicle can be driven for a continuous 15 min or more with the engine coolant temperature at 80 °C {176 °F} or more.
8. Stop the engine.
9. Leave the vehicle for 1 hours or more.
PID Item/Simulation Item Used In Diagnosis
PID/DATA monitor item table
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PIDs |
Reference |
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FUEL_CAP_LAMP
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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 and diagnostic monitoring test results (EVAP system related).
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—
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Go to the next step.
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3
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PURPOSE: VERIFY FUEL FILLER CAP MALFUNCTION
• Access the FUEL_CAP_LAMP PID using the M-MDS. (See PID/DATA MONITOR INSPECTION.)
• Is the FUEL_CAP_LAMP PID value Yes(True)?
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Yes
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Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 1.
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No
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Go to Troubleshooting Diagnostic Procedure to perform the procedure from Step 2.
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Troubleshooting Diagnostic Procedure
Intention of troubleshooting procedure
• Step 1
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― Verify that the driver forgot to close the fuel-filler cap.
• Step 2
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― Perform a unit inspection of the fuel filler cap.
• 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: INSPECTION OF EVAPORATIVE GAS LEAKAGE FROM FUEL-FILLER CAP
• Verify that the fuel-filler cap is completely closed.
• Is the fuel-filler cap completely closed?
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Yes
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Go to the next step.
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No
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Close the fuel-filler cap completely and perform the repair completion verification.
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2
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PURPOSE: INSPECT FUEL FILLER CAP 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. (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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