Codes P0441 and P0505

Codes P0441 and P0505

Anybody have these codes before?


I understand P0441 is about the purge flow in the evaporative emission control systems is incorrect ...but what part(s) should I look at to replace?

P0505 deals with the Idle control system....so what part(s) should I replace?

P0441 is the same one that i have. 8th gens have a common problem with one of the purge valves. go to the junkyard and buy both valves and the sensors attached to them. couldnt be more than $10.

as for P0505, does your car idle normally? any cold start problems? when you start it the revs should be around 1800-2000 RPM and should quickly drop to 1200 and then to 800 when warm. It could also be a leak thats only open when the engine is cold. I would watch over your idle and check the throttle body and piping for leaks and check the little paraffin ball, or whatever its made of that allows more air when cold and closes the opening when the engine is warm

one code could be promting the other code though, u gotta isolate what one is really causing the problem

Also just to let you know that you posted this in the Tundra forums lol.

Yes indeed but Tundra have O2 problem's and there own set codes

Here's those DTC numbers and trouble areas to check.

P0441
Evap Emission Control System incorrect purge flow

1. Vacuum hose cracked, holed, blocked, damaged or disconnected
2. Open or short in vapor pressure sensor circuit
3. Vapor pressure sensor
4. Open or short in VSV circuit for vapor pressure sensor
5. VSV for pressure switching valve for vapor pressure sensor
6. Charcoal Canister cracked, holed or damaged.
7. Fuel tank over fill check valve cracked or damaged
8. ECM

P0505
Idle Control System Malfunction

1. Open or short in IAC valve circuit
2. IAC valve is stuck or closed
3. Open or Short in A/C switch circuit
4. Air induction system
5. ECM

thanks for a detailed list

yeah i have both codes now actually..
right now, i have 3 codes
p0420, p0446 and p0505

ugh.