Circuit Description
The vapor pressure sensor, VSV for canister closed valve (CCV) and VSV for pressure switching valve are used to detect abnormalities in the evaporative emission control system.
The ECM decides whether there is an abnormality in the evaporative emission control system based on the vapor pressure sensor signal.
DTC P0453
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0451 | Vapor Pressure Sensor Output Changes Extremely Under Conditions: Vehicle Speed: 0 mph (0km/h) And The Engine Speed: Idling Or Vapor Pressure Sensor Output Stuck 5 Min After Engine Start. (2 Trip Detection Logic) |
|
| P0452 | Vapor Pressure Sensor Output Remains Less Than Specific Value: (2 Trip Detection Logic) |
|
| P0453 | Vapor Pressure Sensor Output Remains More Than Specific Value: (2 Trip Detection Logic) |