Trouble Codes Toyota Truck

Joined
Oct 23, 2008
Messages
1
Likes
0
Points
0
#1
I have a 2001 Tundra v8 Engine and the check engine light has been coming on, I borrowed a code reader and came up with two codes:

P0441 EVAP Control System Improper Purge Flow

and

P0446 EVAP Control System Vent Unit

What do these codes mean, and what must I do to fix problem/find solution?

-Joe
 
Joined
Nov 17, 2006
Messages
4,477
Likes
6
Points
38
Location
Portland,Oregon
#2
It could have been just a loose gas cap.....make sure the cap is tight and reset the codes and see if they come back...Jim
 

2POINTautO

Hero Member
Joined
Apr 27, 2007
Messages
379
Likes
0
Points
0
#4
It very likely could be the carbon canister and the VSV which are serviced as a unit (may be separated on your model). Also be certain to clean the vac. and vent hoses. Also replacing the purge solenoid is a good practice due to carbon contaminating them causing them to stick or not seal.Toyota has a bulletin on this code (may not cover your vehicle year).

MOTOR magazine is full of Toyota EVAP issues, here are some archives to look up. Well I was going to make a list but lets say that every month in 2006 except Aug and Nov has a Toyota EVAP story, check them all out.