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

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible cause
DTC Strategy	Monitors the fuel tank pressure sensor output for a stuck condition	Poor Connection Open or short in FTPS circuit Faulty FTPS Faulty PCM
Enable Conditions	Purge flow rate > 0.5 g/s or during Evap. diagnistic test
Threshold value	The difference between the maximum and minimum tank pressure output voltages is less than 1% for more than 60 sec. after purge transitioned off
Diagnosis Time	Continuous
MIL On Condition	2 Driving Cycles