Question about 1999 Lexus ES 300
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Posted on Jan 02, 2017
SOURCE: car codes
When you have P0440, P0441 and P0446, it is a very good bet that the fuel cap was loose, or the fuel cap rubber seal is compromised. You will get all three of those codes every time that the cap is loose. Always make sure that the fuel cap is as tight as you can get it after you refuel.
Posted on Nov 13, 2008
po305 is related to missfire on #5 cylinder
po440 is related to fuel tank pressure
pO441 is for evaporator purge flow malfunction
po446 relates to vent control valve electrical circuit malfunction
missfire is seperate from the other codes
as for the other three codes replace the vent control valve solenoid located near the charcoal canister the oth3er codes can relate to a faulty solenoid
after replacing light will only go out if you clear through a scan tool or three drive cycles of over 10 min each
Posted on Jan 10, 2011
Check and make sure your gas cap is screwed on tightly. Then, check the vacuum lines are attached correctly and not leaking. I would bet one of the hoses came off or you have a hole in one or more. The hoses split with age. Start with these, before changing sensors or solenoids.
Posted on Feb 21, 2016
Tips for a great answer:
Feb 06, 2017 | Cars & Trucks
Feb 21, 2016 | 2003 Lexus LS 430
Nov 12, 2014 | 2000 Toyota Camry
Sep 11, 2012 | 1998 Toyota Camry
Repair open or short in voltage feed circuit to Purge Solenoid.
Repair open in PCM purge command circuit.
Replace purge Solenoid.
Replace vacuum switch.
Repair restriction in Evap line or canister or soleniod.
Repair resistance in purge connector.
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, or
Inspect the EVAP system for cuts/holes in tubes/hoses.
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