2002 toyota solara P0440

Johnny Massengill

• 345 Answers
• Posted on Nov 15, 2008

SOURCE: obd code p0440 for check engine light on 2000 Toyota Corolla

p0440 code means that the evap system has a leak. This could be caused by a bad or improperly installed gas cap. Either that or the purge solenoid has failed or the canister is plugged and not working properly.

SOURCE: p0440,p0441,p0446

These codes are all for the Evaporative Emissions System.

P0440- Evaporative emissions system fault- just saying there's something wrong with the system.

P0441- Evaporative emissions system- Incorrect purge flow- saying that the system isn't purging the raw fuel vapors (hydrocarbons- HC) as well as it should.

P0446- Evaporative emissions system- Control valve circuit low- there is a valve, usually located on the charcoal canister at the rear of the vehicle, that opens to allow fresh air to enter the evaporative emissions system as the engine vacuum purges the fuel vapors from the charcoal canister and closes when purge is not needed to prevent leakage of those fuel vapors to the atmosphere (HC is a greenhouse gas and is regulated as such by the fed gov't).

Given that you have the incorrect purge flow code and the control valve code together, my bet is that the vent control valve has failed (causing the P0446) and is not opening to allow fresh air into the system to displace the air from within the system that is being pulled to the engine. Since you have no fresh air entering the system, the engine will pull a vacuum on the system instead of the vapors "flowing" into the engine (causing the P0441).


I hope that this is helpful to you!!!


ASE Master Technician with L1 and X1 Certifications; Nissan Scope Technician; Chrysler Level 3 Silver Technician- 12+ years experience.

SOURCE: 2002 toy camry codes p0440

There fault codes are indicating a fault with your EGR system / EGR valve.

SOURCE: P0440, P0441, P0446

Error code P0446 is an Evaporative Control System vent control malfunction. DTCs P0441 and P0446 are recorded by the ECM when evaporative emissions leak from the certain components, or when there is a malfunction in either the VSV for EVAP, the VSV for
pressure switching valve, or in the vapor pressure sensor itself.

Arnie Burke

• 7339 Answers
• Posted on Sep 20, 2009

SOURCE: check engine light is on

you hav egr valve problems n evap emissions flaws-ull need a repair manual if ur the mech-buy one at a parts place-clymer n haynes r the best