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P0455 Evaporative Emission System-Leak detected(Large leak)
AutoHex Online Help: Hyundai GENESIS(BH) 2012
General Description
The evaporative emission control system prevents hydrocarbon (HC) vapors from the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The PCM controls the Purge Control Solenoid Valve (PCSV) to purge any collected vapors from the canister back to the engine for combustion. This valve is actuated by the purge control signal from the PCM and controls fuel vapor flow from the canister to the intake manifold.
DTC Description
Checking output signals from fuel tank pressure sensor under evap.system test, if fuel tank's vacuum is lower than prescribed threshold, ECM sets P0455.
DTC Detecting Condition
Item | Detecting Condition | Possible cause |
DTC Strategy | Fuel tank pressure behavior (large leak)
| Fuel Filler Cap missing Leakage in each hose/fuel filler pipe Leakage in CCV/ Canister/ Fuel tank Stuck in each purge hose/pipe between fuel tank and intake manifold |
Enable Conditions | Canister Close Valve close
Canister Purge Valve close
Time after engine start > 560 sec
4?(39.2?) < ECT at start temp < 50?(122?)
ECT at start – IAT < 9.8?(49.64?)
0?(32?) < IAT temp < 42?(107.6?)
BARO > 74.5 kPa
15% < Fuel level < 85%
Duration of tank ventilation > 10 sec
Fuel System Status Closed loop
Accel. Pedal = 0%
Disable conditions : P0300 ~ P0308
|
Threshold value | Fuel tank's vacuum > -1.0kpa
|
Diagnosis Time | -
|
MIL On Condition | 2 driving cycle
|