Lexus SC430/span> On the 2003 Lexus SC430, the P0441 and P0446 are set when there is an evaporative emissions leak from the components or when there is a malfunction in either the VSV for the EVAP, the VSV for the pressure switching valve, or in the vapor pressure sensor itself. P0442 is set when there is an evaporative emissions leak from the components or when the vapor pressure sensor malfunctions. So- best place to start here is having the EVAP system “smoked”. This is where a machine forces smoke through the…
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