Question about 2004 Toyota Corolla

Open Question

P0133, P300, P0301, P0304, P0441, P0442, P0446

Check engine light was on

Posted by Anonymous on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
jschoon77
  • 55 Answers

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.


Posted on Nov 17, 2008

Ad
  • 496 Answers

SOURCE: 2001 corolla chack engine light on.

P0440= Evap Control Sys Malfunction
P0441= Evap Control Sys Purge Flow Fault
P0446= Evap Control Sys Vent Ckt Malfunction

Posted on Mar 31, 2009

  • 1 Answer

SOURCE: 2001 corolla P0440, P0441, P0446

P0446 is a "EVAP System - vent control malfunction"
I have a 2000 Corolla and was getting this code, resetting and about 1 1/2 tank or 500 miles later it would come back on. I changed the PCV valve as a first easy fix and no luck. Then I read online about a possible solution was what is called a VSV (Vacuum Switching Valve) and replacing that. I decided to spend the $80 and replace it. It is now 2500 miles later and no more check engine light. The valve is situated under the car just past the gas tank towards the front of the car by the rear axel. It is right by the charcoal canister and is a little tricky to get at but it can be done. Only one tiny screw holds it in it's bracket and I could not get it back in so i zip tied it in there. The unit that I replaced looked to be in pretty good shape but there was some corrosion on it and it looked feasible that it could be defective and apparenlty it was.

Posted on May 29, 2009

  • 7353 Answers

SOURCE: Code P0441 and P0446. What does it mean?

Both codes are with the EVAP SYSTEM, there are numerous items it could be. A repair shop that does Toyotas or the delaler would be the best to check it out for you. Its not anything that will leave you walking or disable the car.

Posted on Nov 13, 2009

  • 1 Answer

SOURCE: Had OBD2 codes P0441 & P0446 on my 1999 Toyota

According to my 2002 Toyota Tundra manual (and it may be different for your car) P0125 is as follows:
Insufficient Coolant Temperature
for Closed Loop Fuel Control

This would seem unrelated to your original problem.

Posted on Sep 17, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to fix whatever caused the codes P0441, P0442,P0446


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.
http://www.obd-codes.com/p0446
http://www.obd-codes.com/p0441
http://www.obd-codes.com/p0442

Feb 21, 2016 | 2003 Lexus LS 430

1 Answer

Problem started suddenly two days ago. Engine is 4cylinder - Autozone diagnostic showed codes p0441, p0442, p0446. Replaced spark plug wires and disconnected battery to reset computer. Now - no check...


PO441 ,PO442 codes have to do wit the oxagen sensors, If there is a problem with both of them,Or your cat is pluged up ,The car will not run (Properly)

Nov 11, 2012 | 2004 Hyundai Santa Fe

1 Answer

2009 sienna setting c.e.l. light multiple missfire codes


Change...distributor cap ..spark plug wires or spark plugs

Jul 30, 2012 | 2009 Toyota Sienna

1 Answer

Solution for engine check up light for code p0441 for hyundai accent 2001


P0441 Evaporative Emission Control System Incorrect Purge FlowOBD-II Trouble Code Technical Description

Evaporative Emission Control System Incorrect Purge Flow
What does that mean?

This indicates that a part of the EVAP control system is no longer functioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

EVAP emission canister purge is controlled by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank into the engine to be burned, rather than be vented to atmosphere. A vacuum switch is used to detect when flow exists. If the PCM commands purge and sees that the switch is closed (indicating no detected purge flow) P0441 is set.
Symptoms

Likely, no symptoms will be discernible to the driver, other than the illuminated Check Engine Light.
Causes

A code P0441 could mean one or more of the following has happened:

  • Bad vacuum switch
  • Broken or damaged EVAP line or canister
  • Open in PCM purge command circuit
  • Open or short in Voltage feed circuit to Purge Solenoid
  • Faulty purge solenoid
  • Restriction in EVAP solenoid, line or canister
  • Corrosion or resistance in purge connector
  • Bad PCM
Possible Solutions

With a P0441 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:

  • Common Chrysler fix - Replace Leak Detection Pump / LDP
  • Repair damaged EVAP lines or canister
  • 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 solenoid
  • Repair resistance in purge connector
  • Replace PCM

Other EVAP DTCs: P0440 - P0441 - P0442 - P0443 - P0446 - P0453 - P0455 - P0456

Jul 11, 2012 | Cars & Trucks

1 Answer

Have codes P0441, P0442, and P0446. What could be the problem?


this obd2 trouble code table can help you understand the meaning of code.
and for p0441, you can try:
Repair damaged EVAP lines or canister.

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.

Replace PCM.

for p0442

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.

Aug 15, 2011 | 2003 Toyota ECHO

1 Answer

Have OBD codes P2A00, P0441, P0442, P0446 on my 2003 Highlander. Selling the car in a few months. Does this really need to be repaired before trade-in? Can I just erase the codes?


NOPE CANT ERASE CODES UNTIL THE PROBLEM IS FIXED OR THE SERVICE ENGINE LIGHT SOON WILL STAY ON. CODE PO441 - EVAPORATIVE EMISSION EVAP SYSTEM INCORRECT FLOW DETECTED.CHECK INTAKE VACUUM HOSE CONNECTIONS AT THE EVAP CANISTER PURGE VALVE.IF ALL IS GOOD.THE EVAP CANISTER PURGE VALVE COULD BE BAD. CODE PO 442 - EVAPORATIVE EMISSION EVAP SYSTEM SMALL LEAK DETECTED. EVAPORATIVE EMISSION SYSTEM LARGE LEAK DETECTED FUEL CAP LOOSE OR OFF MISSING. CODE PO 446 - EVAPORATIVE EMISSION EVAP SYSTEM VENT CONTROL CIRCUIT MALFUNCTION.

May 21, 2011 | Toyota Highlander Cars & Trucks

1 Answer

Codes:p1346/p1349/p1354/p0446/p0300/p0301/p0303/p0305/p0307/ p0430/car runs rough when idling/lexus gs 400 1998


P0301 Cylinder No. 1 Misfire Detected
P0302 Cylinder No. 2 Misfire Detected
P0303 Cylinder No. 3 Misfire Detected
P0304 Cylinder No. 4 Misfire Detected
P0305 Cylinder No. 5 Misfire Detected
P0306 Cylinder No. 6 Misfire Detected
P1346 Variable Valve Timing (VVT) Circuit Range/Performance Fault
P1349 Variable Valve Timing (VVT) System Malfunction
P0330 Knock Sensor
P0446 EVAP Vent Control Fault
P0430 Catalyst System

Stop driving immediately.....

You defiantly skipped on your timing........

Feb 14, 2011 | 1998 Lexus Gs 400

1 Answer

2001 corolla chack engine light on.


P0440= Evap Control Sys Malfunction
P0441= Evap Control Sys Purge Flow Fault
P0446= Evap Control Sys Vent Ckt Malfunction

Mar 30, 2009 | 2001 Toyota Corolla

Not finding what you are looking for?
2004 Toyota Corolla Logo

Related Topics:

38 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8575 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...