Monitor Description

If the canister pressure sensor voltage output (pressure) is less than 0.45 V: 42.11 kPa (abs) [6.11 psi (abs)], the ECM interprets this as an open or short circuit in the canister pressure sensor or its circuit, and stops the EVAP system monitor. The ECM will illuminate the MIL and store this DTC (1 trip detection logic).

If the canister pressure sensor voltage output (pressure) is higher than 4.9 V: 123.761 kPa (abs) [17.95 psi (abs)], the ECM interprets this as an open or short circuit in the canister pressure sensor or its circuit, and stops the EVAP system monitor. The ECM will illuminate the MIL and store this DTC (1 trip detection logic).

If the sensor voltage output does not change for 2 minutes, the ECM interprets this as the sensor being stuck, and stops the monitor. The ECM will illuminate the MIL and store this DTC (2 trip detection logic).

If the canister pressure sensor voltage output fluctuates rapidly for 10 seconds, the ECM stops the EVAP system monitor. The ECM interprets this as the canister pressure sensor voltage fluctuating, and stops the EVAP system monitor. The ECM will illuminate the MIL and store this DTC (2 trip detection logic).