DTC P0451 EVAP. Emission System-Pressure Sensor Range / Performance: DTC Detecting Condition

DTC DETECTION CONDITION REFERENCE CHART

Item	Detecting Condition	Possible Cause
DTC Strategy	Plausability check signal stuck	Contact resistance in connectors Faulty FTPS
Enable Conditions	Vehicle speed > 45km/h(28mph) Canister Purge Flow variation within 13 sec. > 1kg/h Minimum Tank Pressure Signal Voltage) 0.32V Ambient air temperature model > -10°C(14°F) No relevant failure 11 < Battery voltage < 16V
Threshold Value	Signal variation < 15mV
Diagnostic Time	65 sec.
Fail Safe	EVAP. System monitoring is inhibited Fuel Tank Pressure Sensor monitoring is inhibited Canister close valve monitoring is inhibited
Mil On Condition	2 Driving Cycles