Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Toyota
This answer was rated:

2004 Toyota Highlander: check engine light..the codes that..canister

My 2004 Toyota Highlander check...
My 2004 Toyota Highlander check engine light and vsc light keeps coming off and on. I took it to the dealer and the codes that came up were PO446 and B2799. They wanted to replace the charcoal canister (?) and reset the system for $800. I declined & they said I would never pass inspection. Someone mentioned it could be a loose gas cap and not to top off the fuel. I replaced the cap, engine & vsc lights went out. I went to inspection and passed. The lights came on again 2 days ago. I would very much appreciate your opinion.
Thanks,
Rose
Show More
Show Less
Ask Your Own Toyota Question
Answered in 9 minutes by:
11/15/2009
Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,541
Experience: Toyota Master Diagnostic
Verified

The VSC Off light comes on by default with the check engine light. The B2799 means that an unregistered key was used. I would not worry to much about it unless it keeps coming back. Is the p0446 the code that is coming back this time? Auto Zone does free code reads so you do not have to pay the dealer again. The most common problem is the hose that goes to the CCV on the side of the air cleaner housing gets knock off when people change the air filter. Check the hose it is about 3/8 in diameter. The other issue is the VSV on the canister. Given the age it is not likely the canister. Someone does not know how to diagnose or they are too lazy to spend the time to do it right. Let me know about the hose and if you can get the code number again to confirm.

 

Skyvisions

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,541
Experience: Toyota Master Diagnostic
Verified
Skyvisions and 87 other Toyota Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago
Thanks very much Skyvisions -- appreciate it! I'll take my vehicle to an Auto Zone for another diagnosis and see what comes up this time.

Let me know how it goes.

 

Skyvisions

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,541
Experience: Toyota Master Diagnostic
Verified
Skyvisions and 87 other Toyota Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago
Checked hose as suggested; it's okay. Lights went out and now came back on again. Autozone checked and gave me following info: Evaporative emission control system vent control circuit fault. Probable: Open or short circuit condition; Poor electrical connection; Faulty CCV vent control solenoid. Any thoughts on what this might mean or how to correct?

There are about three different codes that will fit the descriptions that they gave you. Did they give you any specific code numbers such as P0441 or P0446? The most common problem on the Highlander for these codes is a close canister valve which is mounted to the top/back side of the air cleaner box. If someone just replaced the air cleaner recently they probably popped the 3/8 inch rubber hose off of the bottom of this valve. Open the hood and check to see if this is the case. Let me know if you have the exact code numbers that they gave you or if this hose has popped off as I described.

 

Skyvisions

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,541
Experience: Toyota Master Diagnostic
Verified
Skyvisions and 87 other Toyota Specialists are ready to help you
Ask your own question now

Sorry to repeat myself about the hose on the canister I have three of these particular questions going and forgot that I all ready told you about that hose at the air cleaner box. Do you have the code numbers that are reset system this time?

 

Skyvisions

Ask Your Own Toyota Question
Customer reply replied 8 years ago
Yes, the code number is XXXXX; sorry for not supplying before

No problem, this code will also set one up close canister valve or CCV as it is known by which is mounted to the side of your inbox sticks open. There have been a lot of problems with this valve on the air cleaner. You can remove the valve and vacuum test it and apply 12 V and ground to the solenoid to make sure that it is not leaking. Let me know what you find this valve.

 

Skyvisions

Ask Your Own Toyota Question
Ask Skyvisions Your Own Question
Skyvisions
Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,541
14,541 Satisfied Customers
Experience: Toyota Master Diagnostic

Skyvisions is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU!

JugheadUSA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Auto Technician

1,001 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

180 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,229 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Anthony

Anthony

ASE Certified Technician

401 satisfied customers

ASE Master Automobile Technician with over 20 years exp. in this field.

Richard

Richard

ASE Certified Technician

9 satisfied customers

Toyota tech. ASE Certified Technician

Skyvisions

Skyvisions

ASE Certified Technician

14,541 satisfied customers

Toyota Master Diagnostic

Genchi Genbutsu

Genchi Genbutsu

Toyota Master Technician

3,761 satisfied customers

Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine

< Previous | Next >

Related Toyota Questions
RAV4: Please can you tell me where the OCV Filter is on a 1AZ-FE
Please can you tell me where the OCV Filter is on a 1AZ-FE engine? A Photo would be nice! Thanks… read more
Genchi Genbutsu
Genchi Genbutsu
Toyota Master Technician
Vocational, Technical or Trade Scho
3,761 satisfied customers
Location of my temperature sensor in my toyota tundra year 2000
Where is the location of my temperature sensor in my toyota tundra year 2000… read more
Boxer54
Boxer54
Line Technician
2 years university - did not gradua
1,563 satisfied customers
How do I change the thermostat on a 1999 Toyota Avalon?
How do I change the thermostat on a 1999 Toyota Avalon?… read more
Richard
Richard
ASE Certified Technician
Vocational, Technical or Trade Scho
9 satisfied customers
Trac off light and engine light keep coming on even after
Trac off light and engine light keep coming on even after the toyota dealer clears code , I think since the error code read lean it's not getting fuel from the fuel pump in the tank to the step pump w… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
I changed the air filter and now it idles low and stalls. No
I changed the air filter and now it idles low and stalls. … read more
tim37857
tim37857
Mechanic
High School or GED
71 satisfied customers
The check engine light is on and the PWM vacuum switching
The check engine light is on and the PWM vacuum switching valve is chattering on my 2006 Toyota corolla. The air filter is new and I replaced the mass flow sensor about a year ago. The code is PO171. … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Engine starts warms up, drives well, at random engine turns
Engine starts warms up , drives well , at random engine turns off as if key was turned off , one of the main relays in center dash has power when key is off right after engine dies , will not restart … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
It's shaking and check engine light is on. It was blinking
It's shaking and check engine light is on JA: Does the light stay on, or does it blink? Customer: It was blinking yesterday and now it stays on JA: What is the model/year of your Toyota? Customer: 200… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
My 2000 Camry V6 displays the check engine light on code
My 2000 Camry V6 displays the check engine light on code P0171. … read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
Engine shutters or bucks at about 55 mph. 236,000 automatic
engine shutters or bucks at about 55 mph JA: How many miles are on the car? Is it an automatic or a manual transmission? Customer: 236,000 automatic trans JA: What is the make/model of your car? Custo… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
The check engine comes on with the air filter in place. But
the check engine comes on with the air filter in place. But when I remove the air filter the check engine light comes on? Why ? … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
My check engine light,VSC light and Trac off lights are all
Hi, my check engine light,VSC light and Trac off lights are all on. What does this mean? … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
Vsc and engine came on together after I has the air filter
vsc and engine came on together after I has the air filter replace,they left small air hose off.Put hose back on and reset codes, engine light went out,but vsc came back on. They also change gear shaf… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
Check engine light on, no acceleration. When I opened the
Check engine light on, no acceleration. When I opened the hood, I found the air filter clips NOT clipped. Clipped them closed, restarted and same thing. Sounds like it's in low gear, and will not acce… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
Gunned the engine passing at 40mph and had 'check engine,
gunned the engine passing at 40mph and had 'check engine, light come on with 'traction control' light, and 'inspect hybrid system' warning message on the dash along with master triangle exclamation ic… read more
Skyvisions
Skyvisions
ASE Certified Technician
14,541 satisfied customers
2002 toyota celica gt getting code p0171 replaced air filter
2002 toyota celica gt getting code p0171 replaced air filter cleaned maf sensor checked maf sensor ny unplugging it and it seems to worl as vehicle turned off once i did that. I dont see any vacuum le… read more
Chris (aka-Moose)
Chris (aka-Moose)
Auto Technician
Vocational, Technical or Trade School
1,001 satisfied customers
I had a new air filter installed 06-Jan-2015 and I just
I had a new air filter installed 06-Jan-2015 and I just discovered that the hose from the filter to the engine was broken and obviously glued back together. My engine has been running very sluggish la… read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
2008 Toyota Sienna. I replaced the air filter and MAF/IAT
It used to stall at first start, then would work on second start. Sometimes hesitates when driving just a little bit. Today, it starts without stalling, but the RPM first go to 1000, then go up by ~100 4-5 times till they reach 1500 which is normal since the engine is cold … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,403 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x