Acura

Acura Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Acura

I have a 2007 Acura MDX that just failed emissions. I am…

Customer Question
Hello i have a...

Hello i have a 2007 Acura MDX that just failed emissions

Mechanic's Assistant: Are you fixing your ZDX yourself? What have you tried so far?

I am talking about Acura MDX 2007 ..it has bank one catalytic convertor error

Mechanic's Assistant: How many miles are on the car? Do you have scan tool or a code reader?

P0420 Catalyst System Efficiency Below Threshold (Bank 1)

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

135000

Submitted: 2 months ago.Category: Acura
Show More
Show Less
Ask Your Own Acura Question
Answered in 4 minutes by:
12/21/2017
Mechanic for Acura: Dan, Technician replied 2 months ago
Dan
Dan, Technician
Category: Acura
Satisfied Customers: 25,215
Experience: 2 Year Automotive Diploma with Database Access
Verified

Hello, my name is ***** ***** I'm here to help get your problem solved.

Ask Your Own Acura Question
Mechanic for Acura: Dan, Technician replied 2 months ago

This almost always means the catalytic converter has failed. Verify that the fuel trims on both banks are good at idle and when driving the vehicle. It is possible to have the fuel trim at 20% and not set a fuel trim code and cause the catalytic converter to not function properly. (Honda fuel trims target 1.00 so 1.10 is +10% and 0.90 is - 10%. If the fuel trim is only off on one bank, look for a faulty Air/Fuel (A/F) Ratio sensor, a vacuum leak or a fuel delivery problem on the bank where the fuel trim is off. Monitor the rear O2 sensor on B1, the firewall bank, and when driving at a steady cruise that O2 sensor should not switch, it should be steady around 0.5 to 0.8 volts. If it is trying to switch, the code will set. There is a catalytic converter on the rear side and a 3rd one that is not monitored. So if the catalytic converter is faulty, it is the one off the manifold. Having converter replaced is about a $800 job at a shop, you are fine to drive vehicle as is if it seems to run normally. Let me know if you have questions, thanks.

Ask Your Own Acura Question
Ask Dan Your Own Question
Dan
Dan
Dan, Technician
Category: Acura
Satisfied Customers: 25,215
25,215 Satisfied Customers
Experience: 2 Year Automotive Diploma with Database Access

Dan 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:

I took the Power Steering O-Ring service bulletin linked from JustAnswer to my Acura dealer, and not only did they no-charge the o-ring, they also replaced the power steering pump at no cost.

Gary RStevenson Ranch, CA

Thank you very much for saving my daughter and her family a lot of money on her Honda. You are definitely on my list for future help. Thanks, again.

FredUSA

I just heard from my mechanic. You were right...a $45.00 job. THANK YOU!! Your response was received in less than 10 minutes!!

Linda B.USA

Your answers were clear and the diagrams were perfect. Dealer wanted $87 for an hour of labor and even I did it in 15 minutes.

EdUSA

HONDA PLATINUM was great. I really appreciate his help. I was ready to trade my new Honda until he told me to wait until I got 3,000 miles on it and my gas mileage would get much better.

SummerUSA

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

< Previous | Next >

Meet the Experts:

thebesthonda

thebesthonda

ASE MasterTechnician

783 satisfied customers

26 years experience

Kyle N.

Kyle N.

ASE Certified Tech

631 satisfied customers

Master ASE Tech, Ca. smog lic

HONDASERVICE7791

HONDASERVICE7791

TECHNICIAN

462 satisfied customers

OVER 20 YRS EXPERIENCE, OVER 10 YRS ACURA/HONDA EXPERIENCE

George H.

George H.

ASE Certified Technician

460 satisfied customers

ASE Master Tech 15+ years w/L1 Drivability certification

Andrew

Andrew

ASE Master Tech

350 satisfied customers

Master tech for 11 years.

Chris (aka- Moose)

Chris (aka- Moose)

Acura Technician

210 satisfied customers

16 years of experience

Don - Mo Lurch

Don - Mo Lurch

Acura Mechanic

145 satisfied customers

Aftermarket & Factory Mobile Electronics. Sales, Installation & Repair for 30 years. R/S, etc.

< Previous | Next >

Related Acura Questions
Installed a new acura radio and did not get the serial
Installed a new acura radio and did not get the serial number before putting it in and I am trying to figure out the 5 digit code for the radio … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
2006 tsx P0962 code emissions vsa and transmission lights
2006 tsx P0962 code emissions vsa and transmission lights on … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Possibly need to replace o2 sensor. Receiving codes for
Possibly need to replace o2 sensor. Receiving codes for p2647 , p1112 , all wheel drive:77, p2A00. Also my Audio button on the Navigation interface does not repond, not Does the XM button. The top clo… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Mu Acura MDX engine shutdown during driving. 175K. MDX 2005.
its MDX, i am not, i just want to know what is the issue with the car. i am not savvy to make repairs myself … read more
Gunvir Singh
Gunvir Singh
1,871 satisfied customers
26003711 I need a radio code
26003711 I need a radio code JA: Okay, I'll connect you to the mechanic to go over that information regarding your Acura. Before I do, is there anything else you want him to know? Customer: No… read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
It won't lock either with the remote or with the key. As
It won't lock either with the remote or with the key. As soon as I touch the drivers door it unlocks. … read more
Jagmaster
Jagmaster
Bachelor's Degree
346 satisfied customers
The car is overheating in traffic. In the morning, I turn on
The car is overheating in traffic. In the morning, I turn on the car and turn on the A/C and only one fan came on. Don't both fans come on when the A/C is turned on?… read more
Mechanic01
Mechanic01
1,992 satisfied customers
I recently replaced the timing belt and the check engine
I recently replaced the timing belt and the check engine light started coming on. I had the code checked and it indicated that the crankshaft position sensor was tripping. I replaced it and I also per… read more
Stephen, MBA
Stephen, MBA
Master's Degree
166 satisfied customers
2001 acura mdx key fob stopped working...changed to new
2001 acura mdx key fob stopped working...changed to new battery and have no responses...gave up and have been opening the care manually for two years now...sick of it...but I heard the fob needs to be… read more
TIM MOHR
TIM MOHR
SHOP OWNER
Master's Degree
8,037 satisfied customers
I need the procedure and time allotted time to replace the
I need the procedure and time allotted time to replace the timing belt and water pump in a 2005 Acura TL V6… read more
Dan
Dan
Technician
25,215 satisfied customers
I just typed it in. 2010 TL. Nothing. my wife has the car at
nothing. my wife has the car at her work and I cannot get there … read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,638 satisfied customers
The same thing as prety much everyone here. SH-AWD and CHECK
The same thing as prety much everyone here. SH-AWD and CHECK EMISSIONS light … read more
Chris (aka- Moose)
Chris (aka- Moose)
Acura Technician
Vocational, Technical or Trade School
210 satisfied customers
My 03 TL is tossing a lot of codes out at this time.
My 03 TL is tossing a lot of codes out at this time … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,605 satisfied customers
I've installed a new tensioner pulley and applied 33 lbs of
I've installed a new tensioner pulley and applied 33 lbs of torque to the bolt but when I start the engine the bolt loosens … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
4,605 satisfied customers
I have 2004 Acura MDX. Sometime I get cold air even
I have 2004 Acura MDX. Sometime I get cold air even temperature set to 90. Sometimes it blows hot air but hot air temperature cant be controlled. Even at temperture 70, it blows hot air like 90 or so.… read more
justinsbg
justinsbg
Lead Diagnostic Tech
Associate Degree
996 satisfied customers
1994 Acura Integra Cruse control stoped working. How to fix?
1994 Acura Integra Cruse control stoped working. How to fix? … read more
Cesar Jimenez
Cesar Jimenez
Owner/CEO
Vocational, Technical or Trade School
130 satisfied customers
My 2000 Acura TL started of with the drive light blinking a
My 2000 Acura TL started of with the drive light blinking a few months back. Then, it started going into 'linp mode'. I'd shut the car off then back on a gain and it would be fine for a few miles or s… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,638 satisfied customers
2007 MDX low beam not working. I replaced the bulb to no
2007 MDX low beam not working. I replaced the bulb to no avail. … read more
Dan
Dan
Technician
25,215 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