How JustAnswer Works:

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

Ask rpmdiag Your Own Question

rpmdiag
rpmdiag, Diagnostic Expert
Category: Lexus
Satisfied Customers: 5114
Experience:  38 years experience
12769047
Type Your Lexus Question Here...
rpmdiag is online now
A new question is answered every 9 seconds

Po440, po441 and po446 on a 2002 lexus rx300. what do those mean?

Customer Question

I got a po440, po441 and po446 on a 2002 lexus rx300. what do those mean?
Submitted: 5 years ago.
Category: Lexus
Expert:  rpmdiag replied 5 years ago.

HiCustomer

 

These codes are all related to the EVAP system, telling us that there is a malfunction in purge flow and venting circuit of the system. It's possible that the vent solenoid, circuit or PCM is defective. The best way to go about this would be with a scan tool, doing bi-directional controls to activate and de-activate the purge valve and vent solenoids while watching fuel trims change at the same time. I found most commonly that the vent solenoid is defective. See PIC for location!

 

Thanks in advance for your ACCEPT and POSITIVE feedback,

 

Ron

 

graphic

Expert:  rpmdiag replied 5 years ago.

Was the oil was just changed before this hapened, If so, it's possible that The CCV hose is loose here.

 

Thanks,

 

Ron

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! Jughead USA
< Last | Next >
  • 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! Jughead USA
  • 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, 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. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • lexpert

    Lexus Master tech

    Satisfied Customers:

    2100
    Master Certified with lexus, 8 years experience with Lexus
< Last | Next >
  • http://ww2.justanswer.com/uploads/LE/lexpert/2012-6-14_21259_Ja2.64x64.jpg lexpert's Avatar

    lexpert

    Lexus Master tech

    Satisfied Customers:

    2100
    Master Certified with lexus, 8 years experience with Lexus
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    1329
    Lexus Expert
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Lexus Tech -

    Satisfied Customers:

    250
    18+yrs experience. State Inspector and Lexus Diagnostics
  • http://ww2.justanswer.com/uploads/AM/amdhcds/2012-4-1_04039_3911361015044607312849462040349387767831419345287n.64x64.jpg AMD's Avatar

    AMD

    Master Technician

    Satisfied Customers:

    229
    L1 Advanced Level Diagnostics Specialist
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    164
    15+ years ASE Master w/L1 Drivability certification
  • http://ww2.justanswer.com/uploads/CA/caprio23/2011-12-13_155550_20111213105344.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    117
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Mechanic

    Satisfied Customers:

    114
    Shop owner experienced in most brands.
 
 
 

Related Lexus Questions

Chat Now With A Lexus Mechanic
rpmdiag
rpmdiag
Lexus Mechanic
5114 Satisfied Customers
38 years experience