Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Related Toyota Questions
Its give a P0420 code catalyst system efficiency below
its give a P0420 code catalyst system efficiency below threshold (bank1) its A 2012 CAMRY SE … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
5,738 satisfied customers
Toyota 4Runner Sport v6: Hello, I just got a 2005 Toyota
Hello, I just got a 2005 Toyota 4Runner Sport and have to deal with these error codes: P0420 - Catalyst system efficiency below threshold - Bank1 P0430 - Catalyst system efficiency below threshold - B… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,102 satisfied customers
Toyota Camry XLE: Hello. Same 2002 toyota Camry v-6 3.0.
Hello. Same 2002 toyota Camry v-6 3.0. My check engine light is on. The code is p0430 catalyst efficiency below threshold bank 2. I found that the o-2 sensor related to this problem was downstream. Th… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
13,102 satisfied customers
Toyota Camry: I have a 2001 toyota camry with a 4 cyl engine
I have a 2001 toyota camry with a 4 cyl engine with the following code. P0420 Catalyst system efficiency Below threshold ( Bank 1) can someone what problems cause this code to come up.… read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
25 satisfied customers
2000 tundra: p0430..2, is the converter bad or can the o2 sensor
p0430 code efficiency below threshold bank 2, is the converter bad or can the o2 sensor downstream be bad to give a p0430 scan on a 2000 tundra?… read more
Dave Nova
Dave Nova
Auto Dealership Owner
Associate Degree
34 satisfied customers
2001 Toyota Sienna XLE: van..exhaust pipe..now my check engine light
I own a 2001 Toyota Sienna XLE van. The other day i backed my van up and I must have backed into a snowbank, and i believe i got snow in my exhaust pipe. Anyways, now my check engine light is coming o… read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
Toyota 4Runner I have a toyota 2006 4runner sr5 with V6 4.0L
I have a toyota 2006 4runner sr5 with V6 4.0L engine. I'm having a trouble code of P0430 catalyst efficiency below threshold (bank 2). First i did was tune up the engine and clean the fuel system. Res… read more
Mastertech 1
Mastertech 1
Lead Technician
Vocational, Technical or Trade Scho
1,755 satisfied customers
2006 toyota 4runner sr5: V6..trouble code..P0430 catalyst efficiency
I got 2006 toyota 4runner sr5 V6 4.0 engine and i'm having a trouble code of P0430 catalyst efficiency below threshold (bank 2). A.) First i did was tune up the engine and clean the fuel system from W… read more
Nissan Specialist
Nissan Specialist
Line Tech
Vocational, Technical or Trade Scho
23 satisfied customers
Toyota tacoma: 3 codes evap emission control system malfunction..vent
i have toyota tocoma it has 3 codes evap emission control system malfunction and and evap emission control vent malfunction and catalyst system below threshold. it is a 2002 . why do we have these cod… read more
Ironmike
Ironmike
ASE Master L1 performance ,Ford tech
Vocational, Technical or Trade Scho
1,773 satisfied customers
2000 toyota camry: 4 cyl with a check engine light..sensors..exhaust
i have a 2000 toyata camry 4 cyl with a check engine light on. the code said p0420.i have changed both upper and lower sensors on the exhaust pipe.The car has calif. emmision. The front sensor is a A-… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
1999 toyota: a check engine light and the DTC is 0420..fwd..o2 sensor
My 1999 toyota forerunner has a check engine light and the DTC is 0420-Catalyst system efficiency below threshold. The truck has 2 catalytic converters. The fwd o2 sensor was replaced last year. The v… read more
Genchi Genbutsu
Genchi Genbutsu
Toyota Master Technician
Vocational, Technical or Trade Scho
3,761 satisfied customers
2003 Camry: check engine light came on two days..000 miles..exhaust
The check engine light came on two days ago in my 2003 Camry with 175,000 miles. Went to Auto Zone who gave me a code of P0420 - "catalytic system efficiency below threshold." I'm noticing some black … read more
Amedee
Amedee
Toyota Technician
Vocational, Technical or Trade Scho
1,245 satisfied customers
2001 Toyota Sienna XLE: 000 miles..lights (check engine, trac, etc)
Have a 2001 Toyota Sienna XLE with 181,000 miles. Started having touble with lights (check engine, trac, etc). Stored code of PO174. Mechanics did not find anything. Next week code PO420 and had the r… read more
Amedee
Amedee
Toyota Technician
Vocational, Technical or Trade Scho
1,245 satisfied customers
engine light..emissions test rpm..catalyst..below threshold
engine light on test result said it did not pass emissions test rpm equals 0729 dtc1 equals po420 catalyst system effiency below threshold b… read more
Genchi Genbutsu
Genchi Genbutsu
Toyota Master Technician
Vocational, Technical or Trade Scho
3,761 satisfied customers
2001 toyota highlander: 000 miles..check engine light came..catalyst
I have a 2001 toyota highlander with 132,000 miles. The check engine light came on reading a code 420. According to the manual that is a bank 1 catalyst system efficiency below threshold. My question … read more
Toyotapro
Toyotapro
Technician
Vocational, Technical or Trade Scho
9,283 satisfied customers
99 toyota 4runner: Vehicle runs fine..pass smog..fault code
I have a 99 toyota 4runner with 170k miles. Vehicle runs fine, however, it is a Calif car that needs to pass smog. Unfortunately it is sending a fault code PO420. "Catalyst system efficency below thre… read more
Toyotapro
Toyotapro
Technician
Vocational, Technical or Trade Scho
9,283 satisfied customers
2003 toyota tacoma: i have a check engine light problem..v..catalyst
i have a check engine light problem on my 2003 toyota tacoma v-6 extra cab.....after hooking a machine to it it read...engine catalyst efficiency below threshold..bank 1...can you tell me wha this mig… read more
Victor
Victor
Diagnose & Repair cust. vehicles
Associate Degree
752 satisfied customers
2001 Camry DTC code p0420,catalyst system efficiency below ...
2001 Camry DTC code p0420,catalyst system efficiency below threshold bank1.What is the correct repair? Thanks… read more
Carhelp4u
Carhelp4u
GM Service Training
2,560 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.

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

1,115 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

199 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,245 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

13,102 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 >

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