Details On DTCs

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DTC P144A-00: (PCM, VIN M) DETECTION CONDITION AND POSSIBLE CAUSE

DESCRIPTION

Evaporator system: clogging between fuel tank and fuel tank pressure sensor

DETECTION CONDITION

Determination conditions

If negative pressure is inducted to the fuel tank via the intake manifold by the operation of the purge solenoid valve with the fuel tank in a sealed condition and the target negative pressure is reached within a shorter period of time than the estimated time.

When the barometric pressure in the fuel tank is fixed and the purge solenoid valve is opened/closed, the negative pressure fluctuation in the fuel tank generates negative pressure exceeding the threshold.

Preconditions

Evaporative gas flow amount: Exceeds 10, 000 cm³ /min or fuel tank vacuum is high
Fuel tank pressure: -4, 340.2-4, 030.1 Pa {-442.57-410.95 kgf/m² , -0.62949-0.58452 psi}⁽¹⁾
IAT sensor No. 1: 4.44-43.33 °C {40.0-109.9 °F}⁽¹⁾
Vehicle speed: 64-145 km/h {40.0-90.0 mph}⁽¹⁾
Barometric pressure: above 72.23 kPa {0.7365 kgf/cm² , 10.48 psi}⁽¹⁾
Period ignition is switched off before engine starts: 210 min or more
Fuel level in fuel tank: 15-85 %⁽¹⁾
Minimum value of intake manifold vacuum: 4 kPa {0.04 kgf/cm² , 0.6 psi} or more
Minimum value of intake air amount: above 2 g/sec
Battery voltage: above 11 V⁽¹⁾
The following DTCs are not detected:

⁽¹⁾	Standard can be verified by displaying PIDs using M-MDS

Malfunction determination period

Drive cycle

Self test type

Sensor used

FAIL-SAFE FUNCTION

VEHICLE STATUS WHEN DTCs ARE OUTPUT

POSSIBLE CAUSE