Mitsubishi

Mitsubishi repair problems? Ask a mechanic for answers ASAP

Connect one-on-one with {0} who will answer your question

Related Mitsubishi Questions
Code p0421 keeps showing up changed o2 sensors cleared code
Code p0421 keeps showing up changed o2 sensors cleared code but still shows up … read more
Kyle
Kyle
Under hood Technician
883 satisfied customers
I have a 2001 Mitsubishi Eclipse GT 3.0L error codes P0431
I have a 2001 Mitsubishi Eclipse GT 3.0L error codes P0431 P0421 … read more
camerontech
camerontech
20 year experience diagnostic technician
class a
1,669 satisfied customers
Engine running rough p0421 code. 04 endeavor. Just had
Just had orielys run code recently replaced #1 ingnition coil and spark plugs ran great for a while … read more
Mike V.
Mike V.
technician
Subaru and Nissan factory training.
31,811 satisfied customers
Check engine light is on in my 2007 spyder gt local shop
check engine light is on in my 2007 spyder gt local shop told me to replace cat on rear bank, car runs great , 99,000 miles, is it possible it could be a bad 02 sensor? … read more
Eric
Eric
Retired
N/A
42,585 satisfied customers
I have a lancer 2003, i have a p0421 p0135 i change bank 1
i have a p0421 p0135 i change bank 1 sensor oxigen i yust ut a new 1 … read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
2,009 satisfied customers
I have a pending po431 code on this 2001 eclipse spider. At
I have a pending po431 code on this 2001 eclipse spider. At idle both downstream o2 sensors are fairly steady but while driving bank 2 is switching a little erratically. I feel like this is not the co… read more
Juan Crespo
Juan Crespo
Sr. Technician
Bachelor's Degree
1,262 satisfied customers
P0421 came on after changing all 4 o2 sensors, Yes and have
Prior ro changing all the o2 sensors i had codes for bank 2 cat. Eff. Now its moved to bank one… read more
sprinkles08
sprinkles08
Technician
High School or GED
19,838 satisfied customers
P0421 bank 1 is code on my mitsubishi. how to fix , car
Customer: P0421 bank 1 is code on my mitsubishi. how to fix … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I have a 06 Mitsubishi Endeavor that has an error code
Customer: I have a 06 Mitsubishi Endeavor that has an error code P0421. The mechanic told me it is probably an O2 sensor failure. I want to find a compatible part for him to replace. It seems that the… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
I have 2 codes on my car on. P0300 and P0421.. 1999
Hi I have 2 codes on my car on. P0300 and P0421.. 1999 Mitsubishi Galant with a 2003 rebuilt motor. Car sometimes don't want to start not sure why or what I should fix first… read more
Roy Belding
Roy Belding
7,528 satisfied customers
I have a 2006 mitsubishi galant 3.8 v6 with a service engine
I have a 2006 mitsubishi galant 3.8 v6 with a service engine soon light on.. Friend had a portable diagnostics mechanism, and showed the code p0421… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
Mitsubishi Eclipse GT: I received a P0421 error. I have changed
I received a P0421 error. I have changed all 4 sensors and reset the code, however, the service engine light continues to burn bright and when I check the code, it is the same one for the sensors that… read more
Eric
Eric
Retired
N/A
42,585 satisfied customers
I recently received some excellent help regarding my 2001 Mitsubishi
I recently received some excellent help regarding my 2001 Mitsubishi Eclipse. I have a new problem now. The Service Engine Soon light came on, we read the code it was P0421....Catalyst system efficien… read more
Eric
Eric
Retired
N/A
42,585 satisfied customers
service engine light on, codes- po154, po421 & po174 is a pending code, I pulled the c
service engine light on, codes- po154, po421 & po174 is a pending code, I pulled the code info but what exactly do these codes mean, (PO154) O2 sensor CKT no activity bank 2 sensor (PO421) warm up cat… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
2007 Mitsubishi Endeavor: diagram of the catalytic converters
Can you provide me a diagram of the catalytic converters on a 2007 Mitsubishi Endeavor. How do you know which one is bad?… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
8,677 satisfied customers
98 Mitsubishi Eclipse: im working..sohc..tranny..accelerating
I'm working on a friends 98 Mitsubishi Eclipse Spider GT, 2.4 SOHC, manual tranny. Code P0170 is on - and he says it is doggy when the engine is cold, kind of chugs when accelerating, but is perfect w… read more
Mike Kelly
Mike Kelly
Auto Mechanic
Vocational, Technical or Trade Scho
2,509 satisfied customers
2000 Mitsubishi Eclipse GT: V6..gear (automatic)..idling..engine bay
I have a 2000 Mitsubishi Eclipse GT (V6). When the engine is cold and the car is in gear (automatic) and idling at 1100 (roughly) RPM, there's a rattling sound from the engine bay. Any RPM above or be… read more
HondaPlatinum
HondaPlatinum
Vocational, Technical or Trade School
25,792 satisfied customers
2005 Mitsubishi Galant: The Check Engine Light Keeps coming on, and we
We bought a 2005 Mitsubishi Galant for our daughter. The Check Engine Light Keeps coming on, and we have had it checked a couple of different times, and they tell me that the code is for the catalytic… read more
Gary
Gary
Vocational, Technical or Trade Scho
15,858 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:

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

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

< Previous | Next >

Meet the Experts:

Doug

Doug

ASE Certified Technician

8,677 satisfied customers

Mitsubishi employed and Factory trained ASE certified technician

Chris (aka- Moose)

Chris (aka- Moose)

Technician

373 satisfied customers

24 years of experience diagnosing & repairing

George H.

George H.

ASE Certified Technician

321 satisfied customers

ASE Master tech 15+ years

Tim Mohr

Tim Mohr

ase master

230 satisfied customers

30 yrs foriegn and domestic, gas and diesel

Don - Mo Lurch

Don - Mo Lurch

Mitsubishi Mechanic

60 satisfied customers

16 years, Line Mechanic, Electronics trouble shooting, etc

AMD

AMD

Master Technician

48 satisfied customers

L1 Advanced Level Diagnostics Specialist

BigBob

BigBob

Service manager/Technician

46 satisfied customers

25 years in the auto repair business

< 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