Question about 2004 Lexus LS 430
Hello, i had the check engine light come on again, and this time, 3 error codes popped up at once. any help would be appreciated. i recently changed the sensor at the front of the motor and the one under the car by the catalytic converter. everything going good for the last few weeks. now 3 errors codes. car still runs ok :) Thanks Todd
P0440 Evaporative Emission System, P0441 Evaporative Emission System Incorrect Purge Flow , AND P0446 Evaporative Emission System Vent Control Circuit
Posted on Apr 23, 2009
I have a es300 with a 0446 code and I am told I need a vacuum switch. Where is the vaccum switch located? I have ordered the part (without the canister) and I hope I can figure out which switch it is. Please answer.
Posted on Jul 23, 2012
You replaced the wrong sensor. Here is a link that can further explain how to trouble shoot this problem http://us.lexusownersclub.com/forums/lofiversion/index.php/t14194.html
Check for Vacuum hose for leak,crack or blocked first then, Vacuum switch Valves for vapor pressure sensor next to the Evaporator Charcoal Canister rear of the fuel tank. Charcoal Canister crack or damage. But mostly likely Charcoal Canister and vapor pressure sensor replacment. Tell us the result.
Posted on Feb 20, 2010
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Posted on Jan 02, 2017
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