DTC P0443-13: Evaporative Emission System Purge Control Valve "A" Circuit Open [11/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. 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 canister to the intake manifold for combustion in the cylinders.

The ECM changes the duty signals to the purge VSV (No. 1 vacuum switching valve assembly) so that the intake amount of evaporated fuel routed to the cylinders 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	Note
P0443-13	Evaporative Emission System Purge Control Valve "A" Circuit Open	Both of the following conditions are met (1 trip detection logic): The purge VSV (No. 1 vacuum switching valve assembly) operation duty signal is 5 to 95%. The target control value and actual control value do not match for 10 seconds or more.	Open or short in purge VSV (No. 1 vacuum switching valve assembly) circuit Purge VSV (No. 1 vacuum switching valve assembly) ECM	Comes on	SAE Code: P0443 DTC for Mexico Models: Applies (Mexico models only)