Monitor Description

If the fuel tank pressure sensor output voltage (pressure) is less than 0.25 V: -17.1875 kPa (gauge) -2.4922 psi (gauge)], the ECM interprets this as an open or short circuit in the fuel tank pressure sensor or its circuit, and stops the EVAP system monitor. If any deterioration has occurred, the ECM will illuminate the MIL and store this DTC (1 trip detection logic).

If the fuel tank pressure sensor output voltage (pressure) is higher than 4.95 V: 23.9375 kPa (gauge) [3.4709 psi (gauge)], the ECM interprets this as an open or short circuit in the pressure sensor or its circuit, and stops the EVAP system monitor. If any deterioration has occurred, the ECM will illuminate the MIL and store this DTC (1 trip detection logic).

If the fuel tank pressure sensor output voltage does not change, the ECM interprets this as the sensor voltage being constant, and stops the EVAP system monitor. The ECM then illuminates the MIL and stores this DTC (2 trip detection logic).

If the fuel tank pressure sensor output voltage fluctuates rapidly for 10 seconds, the ECM stops the EVAP system monitor. The ECM interprets this as the fuel tank pressure sensor voltage fluctuating, and stops the EVAP system monitor. The ECM then illuminates the MIL and stores the DTC.