DTC P0443-13: Evaporative Emission System Purge Control Valve "A" Circuit Open [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
To reduce hydrocarbon (HC) emissions, evaporated fuel from the fuel tank is routed through a charcoal canister to the intake manifold for combustion in the cylinders.
The ECM changes the duty signals to the purge VSV (Vacuum Switching Valve for Purge Control) so that the intake amount of hydrocarbon (HC) emissions is appropriate for the driving conditions (engine load, engine speed, vehicle speed, etc.) after the engine is warmed up.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P0443-13 | Evaporative Emission System Purge Control Valve "A" Circuit Open | Both of the following conditions (a) and (b) are met for 10 seconds or more (1 trip detection logic): (a) The purge VSV operation duty signal is 5 to 95%. (b) The target control value and actual control value do not match. |
|
Comes on | Engine | A |
|