Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Toyota

Engine code 442 with check engine light on. Any ideas got

Customer Question
Engine code 442 with check...
Engine code 442 with check engine light on. Any ideas? got the code from auto zone but they are not much help with diagnosis. car has 110k miles and is an o4 corolla
Submitted: 7 years ago.Category: Toyota
Show More
Show Less
Ask Your Own Toyota Question
Answered in 13 minutes by:
1/26/2010
Toyota Mechanic: ase_master327, Shop Owner replied 7 years ago
ase_master327
ase_master327, Shop Owner
Category: Toyota
Satisfied Customers: 5,288
Experience: +15 years experience with Toyotas. Bumper to bumper diagnosis & repair.
Verified
Hi, thanks for asking.

This is one of the hardest codes to try diagnose on any car.. This means EVAP system.. SMALL leak detected.. Normally you would hook a smoke machine to the EVAP system and activate all the relays and valves with a scantool to see if there was any changes, etc, etc.. this is something that is going to havve to go to a shop for 99% of the time.

Anyways, if yu have access to the proper testing equipment or know someone who does..... I can put the diagnostic steps together for you.. just let me know if you need them. As far as what it will cost in a shop.. Diagnosis is usually about $100 and then if you hiore them to do the work. SOMETIMES they will knock the diagnosis price off the end price if it exceeds the cost of diagnosis.

Anyways.. If I have been helpful so far (letting you know what the code meand and what to expect), then click Accept so I can get credit for helping you. After that, if you need anything else, just let me know. Fair? Cool
ase_master327
ase_master327, Shop Owner
Category: Toyota
Satisfied Customers: 5,288
Experience: +15 years experience with Toyotas. Bumper to bumper diagnosis & repair.
Verified
ase_master327 and 87 other Toyota Specialists are ready to help you
Ask your own question now
Customer reply replied 7 years ago
I am told I made an error. the code was 420. I will of course accept your response and make the payment. Thank you
Toyota Mechanic: ase_master327, Shop Owner replied 7 years ago
Ohh.. ok.. well the P0420 code does change things, and is probably the reason they sold the car. THAT code means the catalytic converter is having problems.... according to the rear 02 sensor..
Common causes for this code are.. bad catalytic converter.. Rear 02 sensor problems, engine misfires and exhaust leaks. Exhaust leaks being the most common.

Of course.. the 'proper' diagnosis still involves a scantool to monitor the signals from the 02 sensors.... IF.. there are no exhaust leaks.

You can check the converter by hitting it with a hammer to see if the 'stuff' rattles around in there.. and if it does.. then you need a converter.

I can send the 'proper' diagnostic for that too, if you need it.. and of course.. I will still be here if you need anything else.:)
Ask Your Own Toyota Question
Ask ase_master327 Your Own Question
ase_master327
ase_master327
ase_master327, Shop Owner
Category: Toyota
Satisfied Customers: 5,288
5,288 Satisfied Customers
Experience: +15 years experience with Toyotas. Bumper to bumper diagnosis & repair.

ase_master327 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

965 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

175 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,225 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

12,676 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
2002 corolla check engine light is on because of charcoal
2002 corolla check engine light is on because of charcoal canister. Can I reset it? Also I was told I dont need this repaired for car to drive ok . ($500 to fix) J… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
My 2013 Corolla is leaking. If you are looking at the engine
Hi, my 2013 Corolla is leaking. If you are looking at the engine you can see the leak on the passenger side lower half of the engine and if you are under the passenger side you can see the leak in the… read more
Chris (aka-Moose)
Chris (aka-Moose)
Auto Technician
Vocational, Technical or Trade School
965 satisfied customers
Working on a 2009 Toyota Corolla S with a 1.8 L engine. The
Working on a 2009 Toyota Corolla S with a 1.8 L engine. The vehicle came in with a high-pitched whining sound. The AC compressor is stuck on. We tried turning it on and off from the control panel insi… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Check engine light. Stays on. Corolla 2002. Haven't tried
Haven't tried anything yet. What should I try? What can I easily try on my own before taking in to shop? … read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
2006 toyota corolla starts but no electrical items work. No
2006 toyota corolla starts but no electrical items work … read more
Amedee
Amedee
Toyota Technician
Vocational, Technical or Trade Scho
1,225 satisfied customers
I have a 2003 Toyota Corolla with the 1zzFE engine and I'm
Hi I have a 2003 Toyota Corolla with the 1zzFE engine and I'm trying to replace the rod bearings but can't figure out what size are in that engine, help! … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Trying to locate camshaft position sensor on a 2010 Corolla
trying to locate camshaft position sensor on a 2010 Corolla LE … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
My girlfriend's 2014 Toyota corolla check engine light is
My girlfriend's 2014 Toyota corolla check engine light is on. When I check codes, it's giving me po171(system too lean)po 441 evap control system improper flow, and po455, which I cannot find a descri… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
High mileage 2007 Toyota Corolla LE Check Engine Error code
high mileage 2007 Toyota Corolla LE Check Engine Error code PO741.....no outward signs of transmission failure....no grinding, no shifting problems, no gear slippage, no surging, no delay in movement.… read more
roy
roy
Associate Degree
3 satisfied customers
My 2001 Toyota Avalon was given a new catalytic converter,
My 2001 Toyota Avalon was given a new catalytic converter, as Pete suggested, but I still have a problem. The car emits a cloud of blue smoke when starting up and occasionally when starting from an in… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2002 corolla everything in engine is new, turned engine ove,
2002 corolla everything in engine is new, turned engine ove … read more
ricardo hohl
ricardo hohl
automotive instructor
Associate Degree
1,818 satisfied customers
My toyota corolla has an engine vibration when idling. i
My toyota corolla has an engine vibration when idling. i cleaned the throttle body but there is no change. when i disconnect the IAC sensor switch, it will run smoothly but at a high rev. Connecting i… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
91 Corolla wagon overheats. The engine fan and the AC
91 Corolla wagon overheats. The engine fan and the AC condenser fan won't turn on. Fans both work solenoids click when temp switch is grounded. No power at 30amp fan fuse or AC fuse. … read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
My 98 automatic corolla problem began with the engine not
my 98 automatic corolla problem began with the engine not turning over after the engine was warm. I would hit the starter with with a rod and it would start. Then it would only start after sitting ove… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
2004 Toyota Corolla will not start. The engine turns over
2004 Toyota Corolla will not start. The engine turns over but it does not fire almost like it is getting choked off. There is no blockage in the air intake, anf the filter is good. After cranking it s… read more
rpmdiag
rpmdiag
High school
7,108 satisfied customers
2008 corolla over 100k miles exhaust smell in cabin, mileage
2008 corolla over 100k miles exhaust smell in cabin … read more
Gunvir Singh
Gunvir Singh
1,702 satisfied customers
I had new catalytic converter, all new oxygen sensors down
Hi I had new catalytic converter, all new oxygen sensors down stream n upstream engine light went off until I driven car 60miles and the light return and the code is stating po171 and I've checked for… read more
Ron Z.
Ron Z.
Vocational, Technical or Trade Scho
2 satisfied customers
Is the catalytic converter the same on the 2001 as on the
is the catalytic converter the same on the 2001 as on the 2004? Are they interchangeable? … read more
Eric
Eric
Retired
N/A
14,436 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