I’ve been having P0441 & P0455 codes showing up on my 2007 Corolla CE. My code reader tells me the areas that need checked. But, I can’t find the vacuum switching valve on it so that I can check it for problems. Somebody said it’s under the hood, but I can’t seem to locate it.
Is is possible that it’s mounted on the vapor canister (which I have located above the rear axle)?
Mark B Handler