Question about 1999 Toyota Camry

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Check engine light stays on, service code is p0446

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  • alboldero May 11, 2010

    My 1999 Toyota Camry has a check engine light on for code P0441- incorrect purge flow, any suggestion or solution ?

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(Restricted/Blocked EVAP Vent Path)
Dirt and dust intrusion into the EVAP canister vent hose assembly, resulting in restricted air flow, may cause this condition.

Replace the existing EVAP canister vent hose assembly with a new assembly

Posted on Oct 07, 2009

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  • Toyota Master
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Check and make sure the gas cap is not loose, this codes means evaporative emissions system leak detected.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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SOURCE: p0446 obd2 code 2004 camry

We had the same problem and the agency just re-adjusted and we have no more problems just the real ones.

Posted on Sep 29, 2008

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SOURCE: 1998 toyota camry V6

P0420 indicates you have a catalyst efficiency issue; replacement of the Air-Fuel Sensor should take care of that;
The P0441, P0446 and (I assume P0440); you said 446 twice, indicates a faulty or loose fuel cap; it is not sealing properly.
Please feel free to respond to me if you have any further questions.
A FixYa rating from you regarding my assistance would be greatly appreciated.

Posted on Dec 27, 2008

  • 1986 Answers

SOURCE: check engine code "P0446 Evap Control System Vent Control Circ"

Unfortunately, this code has nothing to do with the gas cap....
A code P0446 could mean one or more of the following has happened:

  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
Here are some things you could try to fix it:
  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM


Posted on Nov 17, 2009

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1 Answer

I GOT A 1998 SILVERADO 4X4 ENGINE LIGHT ON CODE P0446


Well code 446 is for a problem with the EVAP system which vents fumes from the gas tank to the vapor canister.
You would need to check the system using a test chart for that code.
You can look online for the test procedure and the equipment required.

Feb 03, 2014 | 1998 Chevrolet Chevrolet silverado

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Service engine light is on reading code p0446 for 2003 chevrolet impala pictures on how to fix


A code P0446 could mean one or more of the following has happened:

  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
  • use maxiscan us703 clear the fault codes.

May 21, 2012 | Chevrolet Impala Cars & Trucks

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My check engine light came on code P0446; dashboard says "check gas cap" i took it off retightened it and check engine light still on. I noticed that the metal flap for the gas nozzle is...


The metal flap should not trigger the sensor. Once you tighten the gas cap you should clear the code and see if it comes back. Otherwise it will take a while to go away.
If it does come back even though the gas cap is tight it could be the rubber seal around the gas cap replacing that can sometimes fix this issue also.

May 04, 2011 | 2008 Jeep Grand Cherokee

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Had OBD2 codes P0441 & P0446 on my 1999 Toyota Corolla. Replaced the VSV CHARCOAL EVAPORATORE, disconnected the battery, check engine light went out. came back on this am, took the car to advanced auto...


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.

Aug 22, 2010 | 1999 Toyota Corolla

3 Answers

The check engine light stays on or comes back on when doing smog test. It passed everything on the smog test except check engine light. The indicator code is P0446.


Hi:
Your P0446 code is a Evap vent valve code: Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM's driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.
copyscape.gif Symptoms There will be no obvious symptoms to driver, other than MIL illumination.
Causes A code P0446 could mean one or more of the following has happened:
  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
Possible Solutions With a P0446 OBD-II trouble code, here are some things to try:
  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM

Nov 20, 2009 | 1997 Ford Explorer AWD

1 Answer

Check engine code "P0446 Evap Control System Vent Control Circ"


Unfortunately, this code has nothing to do with the gas cap....
A code P0446 could mean one or more of the following has happened:
  • Faulty vent valve
  • Open, short or excessive resistance on Vent valve control circuit
  • Blockage of vent valve
  • Bad PCM
Here are some things you could try to fix it:
  • Replace Vent valve
  • Repair open, short, or resistance problem in control circuit
  • Repair open, or short, or resistance problem in power circuit
  • Replace PCM


Nov 17, 2009 | 2002 Toyota Corolla

1 Answer

Code p0446 1997 nissan maxima


how did you fix your p0446 code?

Apr 21, 2009 | 1997 Nissan Maxima

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