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DTC P2450-00: Fuel tank solenoid valve performance/stuck open
 
 
 
 
CIRCUIT OPERATION
  • The 12V battery voltage is applied to the fuel tank solenoid valve connector terminal number 1 from the ECM connector terminal number 92.
  • The fuel tank solenoid valve connector terminal number 2 is grounded with the vehicle body.
 
 
TECHNICAL DESCRIPTION
During the key-off evaporative leakage monitoring, after reducing the fuel tank pressure, when fuel tank pressure returns to atmospheric pressure from negative pressure when the evaporative emission purge solenoid is opened during the fuel tank solenoid valve closing instruction, it is judged as fuel tank solenoid valve stuck open.
 
 
MONITOR EXECUTION
Once per driving cycle.
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Evaporative emission purge solenoid monitor
  • Bypass valve monitor
  • Fuel tank solenoid valve monitor
  • Switching valve monitor
  • Canister pressure sensor monitor
  • Manifold absolute pressure sensor monitor
  • Fuel tank pressure sensor monitor
  • Fuel tank differential pressure sensor monitor
  • Barometric pressure sensor/manifold absolute pressure correlation
  • Barometric pressure sensor monitor
  • Fuel level sensor monitor
  • Engine off timer monitor
  • Controller area network (CAN) monitor
Sensor (The sensor below is determined to be normal)
  • Engine coolant temperature sensor
  • Intake air temperature sensor
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • Power supply mode of electric motor switch is OFF.
  • 12V battery positive voltage is 11.0 volts or higher.
  • Engine coolant temperature is higher than 4°C (39°F) and lower than 35°C (95°F).
  • Intake air temperature at ECM wake-up is higher than 4°C (39°F) and lower than 35°C (95°F).
  • ECM is woken up in 5, 6 or 8.5 hours since the power supply mode of electric motor switch was OFF.
  • Barometric pressure is 76 kPa (22.4 in.Hg) or higher.
  • Fuel level is 85 percent or less.
  • Fuel tank pressure at ECM wake-up is less than 19.96 kPa (5.89 in.Hg) or more than 40.00 kPa (11.81 in.Hg).
  • Accumulated time that power supply mode of electric motor switch is ON is more than 27 minutes.
Judgment Criterion
  • The fuel tank absolute pressure subtracted from the barometric pressure measured by the fuel tank pressure sensor is less than specified pressure for 20 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Fuel filler lid cannot be opened even when pressing the fuel filler lid opener switch.
  • Indicates "REFUELING SYSTEM SERVICE REQUIRED" on the information screen in the multi-information display.
 
 
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function, OBD-II Drive Cycle – Pattern 4 OBD- II DRIVE CYCLE.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)
  • Fuel tank solenoid valve stuck open.
  • Shorted fuel tank solenoid valve circuit or connector damage.
  • ECM failed.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
1.STEP 1. Using scan tool (M.U.T.-III SE), read the DTC.
Use scan tool (M.U.T.-III SE) to check and see if a DTC P2419-00 or P2420-00 is set.
Q: Is DTC P2419-00 or P2420-00 is set. set?
Perform troubleshooting for the fuel tank solenoid valve circuit (Refer to DTC P2419-00: EVAP System Switching Valve Control Circuit Low DTC P2419-00: EVAP System Switching Valve Control Circuit Low, and Refer to DTC P2420-00: EVAP System Switching Valve Control Circuit High DTC P2420-00: EVAP System Switching Valve Control Circuit High).
 
2.STEP 2. Check the fuel tank solenoid valve for leaks.
Check for leakage from the fuel tank solenoid valve (Refer to ENGINE, Engine, Motor and Emission Control – Emission Control – Evaporative Emission System FUEL TANK SOLENOID VALVE CHECK).
Q: Does the fuel tank solenoid valve hold pressure?
Replace the fuel tank solenoid valve (Refer to ENGINE, Fuel Supply – Fuel Tank FUEL TANK DISASSEMBLY AND ASSEMBLY).
 
3.STEP 3. Using scan tool (M.U.T.-III SE) to check the data list after perform the evaporative emission system monitor test.
(1) Perform the evaporative emission system monitor test (Refer to EVAPORATIVE EMISSION CONTROL SYSTEM MONITOR TEST).
(2) Use scan tool (M.U.T.-III SE) to check the data list (Refer to DATA LIST REFERENCE TABLE).
  • Item number 560: Sealing valve stuck open NG
Q: Is the check result normal?
Intermittent malfunction (Refer to GENERAL INFORMATION, General Information – How to Use Troubleshooting/Inspection Service Points – How to Cope with Intermittent Malfunctions HOW TO COPE WITH INTERMITTENT MALFUNCTIONS).
Replace the ECM (Refer to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION).