99 Toyota Corolla CE codes P0440,P0441, and P0446

Shadowalkr

New member
Points
13
From
Bridgeport Ct.
Car
99 Toyota Corolla C
Hello,everyone I have a 99 Toyota Corolla CE with CEL codes P0440,P0441,and P0446.There are no drive ability issues.Starts up fine and runs fine considering a few other things I have going on that don't stem from these codes at least I think.(rattling when I accellerate and a whirling sound coming from what sounds like the tire area).Has anyone had any experiences with these codes and what to do to fix these annoying lights on dash....
 

obi_waynne

Administrator
Staff member
Moderator
Points
887
From
Deal, Kent UK
Car
A3 1.4 TFSI 150 COD
It's a problem with the EVAP System Vent Control Circuit

Check the following first...

- EVAP system hose leaking
- Foreign matter caught in fuel filler cap
- Incorrect fuel filler cap used
- EVAP canister or fuel tank leaks
- Vent control valve harness is open or shorted due to Missing Fuel cap
- Faulty vent control valve
- Fuel tank leaking
- Fuel filler cap remains open or fails to close
- Vent control valve circuit poor electrical connection

Find out how the EVAP system works and check each component in it.
 
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