LEMON Manuals: Even more car manuals for everyone
Home >> Kia >> 2021 >> Seltos S, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (Engine Control System Diagnosis - 1.6L (4 Of 6)) >> DTC P0451-00: Evaporative Emission System-Pressure Sensor/Switch Range/Performance >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Item Detecting Condition Possible Cause
DTC Strategy Case1
  • Rationality check, noisy (sudden change, oscillation check)
  • Poor connector connection
  • Faulty FTPS
  • Damaged wiring
  • Faulty ECM
Case2
  • Rationality check, high side
Case3
  • Rationality check, low side
Case4
  • Rationality check stuck during PCSV opening
Case5
  • Rationality check, offset check
Enable Conditions Case1
  • Vehicle speed is less than 30 km/h (19 mph)
  • Time after CC-opening is more than 25s
  • Ambient air temperature is between 0 and 42°C (0 and 107.6°F)
Case2, 3
  • Barometric pressure is greater than 74.5 kPa
  • Ambient air temperature is between 0 and 42°C (0 and 107.6°F)
  • Fuel level is between 15 and 85%
  • Time after CC-opening is greater than 25s
Case4
  • Ambient air temperature is between 0 and 42°C (0 and 107.6°F)
  • Vehicle speed is less than 10 km/h (6.2 mph)
  • Manifold absolute pressure/barometric pressure is less than 0.65 ratio
  • Fuel tank pressure is between -2.5 and 2.5 kPa
  • Barometric pressure is greater than 74.5 kPa
  • Fuel level is between 15 and 85%
  • Change amount of purge mass flow (difference between Max. mass flow and Min. mass flow) is greater than 1.8 kg
Case5
  • Ambient air temperature is between 0 and 42°C (0 and 107.6°F)
  • Barometric pressure is greater than 74.5 kPa
  • Fuel level is between 15 and 85%
  • Absolute value of vehicle acceleration is 2.01m/s2 (6.6ft/s2)
  • Vehicle speed is between 16 and 96.6 km/h (10 and 60 mph)
  • Filtered fuel tank pressure deviation is less than 0.1 kPa
  • Accumulated purge mass is greater than 15g
  • Refueling condition is not detected
  • PSCV and CCV functionality check results is OK
  • Error status of PSCV and CCV after EVAP Leak monitoring is no error
  • Remark: (PSCV and CCV functionality check: OK criteria) After PSCV and CCV functionality check,
    • Deviation fuel tank pressure between (a) and (c) is less than 50Pa
    • Difference between fuel tank pressure in (a) and min fuel tank pressure in (b) is greater than 200Pa

      (PCSV and CCV plausibility check procedure)

      (a) Check tank pressure at purge inactive

    • Absolute of vehicle acceleration is less than 2.01 m/s2 (6.6ft/s2)
    • Manifold absolute pressure/barometric pressure is less than 0.95

      (b) Check tank pressure at purge active

    • When purge mass flow is greater than 0.792 kg/h
    • Absolute of vehicle acceleration is less than 2.01 m/s2 (6.6ft/s2)

      (c) Repetition of (a)

Diagnostic Time Case1
  • 15s
Case2, 3
  • 14s
Case4
  • 100ms
Case5
  • 5s (once per driving cycle)
MIL ON Condition
  • 2 driving cycles