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Home >> Hyundai >> 2021 >> Elantra N Line, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 35 (Engine Control System Diagnosis - 2.0L (Except HEV) (4 Of 6)) >> DTC P0454-00: Evaporative Emission System-Pressure Sensor Intermittent >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different variant/trim than selected.
Item Detecting Condition Possible Cause
DTC Strategy
  • Electrical Monitoring
  1. Poor connector connection
  2. Faulty FTPS circuit
  3. Faulty FTPS
Enable Condition
  • Engine Coolant temperature (ECT) higher than 50°C (122°F)
  • Ambient Air temperature model higher than -10°C (14°F)
  • Vehicle speed lower than 12 km/h (7.5 mph)
  • Fuel level less than 85%
  • 100s after engine start
  • Ambient pressure model more than 10.87 psi (0.75 bar)
  • Canister load less than 0.35
  • Minimum canister purge time more than 3s in case of canister load less than or equal to 0.1
  • Minimum canister purge time more than 25s in case of canister load more than or equal to 0.1
  • Engine speed higher lower than 1400 to 2500 RPM depending on ECT
  • Pedal value less than 0.01%(Pedal sensor 1 voltage 0.859V, not pushed at all)
  • Differential fuel tank pressure is greater than -1100 Pa and less than 400 Pa
  • Minimum drive time check done one time since engine start (Vehicle speed higher than 24 km/h (14 mph) during 60s)
  • 60s since last EVAP monitoring test abortion
  • Modeled Ambient Pressure gradient during uphill driving lower than 1.08 psi (0.075 bar)
  • Battery voltage higher than 10V
  • Fuel sloshing not detected
  • No relevant DTC present
Threshold Value
  • Fuel tank pressure difference more than 0.018 psi (0.0013 bar)
Diagnostic Time
  • 0.12 seconds
MIL ON Condition
  • 2 driving cycles
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