DTC Detecting Condition and Trouble Area
DTC DETECTING CONDITION CHART
| DTC detecting condition | Trouble area |
|---|---|
| DTC P1420: Evaporative Emission System Vent Valve Stuck Open Even if EVAP vent valve is changed off (open) to on (close) with vacuum pump on, variation of pressure sensor is less than 0.2 kPa and pressure difference between minimum pressure of EVAP system and reference pressure is higher than the threshold. (2 driving cycle detection logic) |
|
| DTC P1421: Evaporative Emission System Vent Valve Stuck Closed Even if EVAP vent valve is changed off (open) to on (close) with vacuum pump on, variation of pressure sensor is less than 0.2 kPa and pressure difference between minimum pressure of EVAP system and reference pressure is lower than the threshold. (2 driving cycle detection logic) |