Mitsubishi

Mitsubishi repair problems? Ask a mechanic for answers ASAP

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

Related Mitsubishi Questions
P0421 reads: Warm up catalyst below threshold Bank 1. If
P0421 reads: Warm up catalyst below threshold Bank 1. If bank 1 O2 sensor is pre-cat, maybe that O2 sensor could be bad but not the catalyst. If it were Bank 2, the O2 sensor after the catalyst, there… read more
JOHN aka Eauto
JOHN aka Eauto
self employed
High School or GED
22,028 satisfied customers
2004 Mitsubishi endeavor all of a sudden I noticed like a
2004 Mitsubishi endeavor hey Doug all of a sudden I noticed like a misfire, kind of hard I could feel it throughout the car when in park or in drive not too much during driving. Lights also dim when t… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Outlander XLS: Doug, my ASC light has been off
Hi Doug, my ASC light has been off for years on my 2008 Mitsubishi Outlander XLS 4WD V6. When taken to the dealership all that has been done is the ASC light has been cleared but hours later it will c… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Montero Sport LS 4x4: ,I just found this threat.
Hi, I just found this threat. I had the catalytic converters replaced, and still am getting the same code p0431. What's the next step you think? Engine light came on within 80 miles of driving.… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Endeavor: My 04 mitsubishi endeavor has codes p0421
My 04 mitsubishi endeavor has codes p0421 and p0431. I need to pass emissions. Do I need to replace bank 1&2 cats?… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Galant ES: Hi Doug. I have a 1999 Mitsubishi Galant
Hi Doug. I have a 1999 Mitsubishi Galant ES 2.4L that is intermitently throwing a P0431 code. CEL stays on for a week or so, then turns off. Wait a week...and it's back on. I have read conflicting rep… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi endeavor: 2007 endeavor awd v6. I had a rough idle.
2007 endeavor awd v6. I had a rough idle. a low budget scan tool did identify misfire on cyl 3, I replaced all plugs and put the #3 coil pack on #4, got another code and now the misfire was on #4, rep… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
My service engine light came on My 2002 Mitsubishi Montero
My service engine light came on My 2002 Mitsubishi Montero Limited NOT the Montero Sport and I had 2 codes which were P0134 and P0431. I replace the o2 sensor in bank 1 sensor 1. After replacing it I … read more
Anthony
Anthony
Master Automobile Technician
Vocational, Technical or Trade Scho
11,778 satisfied customers
Mitsubishi Endeavor LS: Hey Doug - I have an 04 Mitsubishi
Hey Doug - I have an 04 Mitsubishi Endeavor and its giving me codes P0421 and P0431. I know that has to do with the cat, but what is the significance of simultaneous codes for bank 1 and bank 2. Any i… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Montero Sport: our 01 montero sport check engine
our 01 montero sport check engine light is on. had the codes read and came back as PO121, PO421,PO431. ok Bank 1 Bank 2 and throttle possition sensor. after reading a responce from Doug C (Expert) on … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Endeavor XLS: Hi Doug... I have a 2005 Endeavor
Hi Doug... I have a 2005 Endeavor which just the other day started putting out a P0431 code. I have read your response to this question and have a couple of follow-ups for you. Just for clarity's sake… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 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
7,006 satisfied customers
Mitsubishi Montero Sport ES: I have a 2003 Monter Sport with
I have a 2003 Monter Sport with a misfire code. I've replaced the plugs and wires 6 months ago. The problem started 3 weeks ago. I also replaced the converters and most of the problem went away. Know … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Mitsubishi Galant: I have a 2004 Mitsubishi Galant 2.4L with
I have a 2004 Mitsubishi Galant 2.4L with 98,000 miles. My check engine light appeared for inspection and I was advised it was of code P0141. I took it to my mechanic and he replaced the O2 sensor in … read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 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
7,006 satisfied customers
Check engine light came on when I was..Misfire..cylinder
Check engine light came on when I was out of town daughter continued to drive. Three codes came up Misfire in cylinder 3, P0421 and P0421PD. Changed the plugs erased the code and at 30 Miles took it b… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
Endeavor: wouldnt start..My check engine light came..light came back
You may remember spending 5 hrs. guiding me to track down why my Endeavor wouldn't start and you tracked it down to a blown fuse. My check engine light came back on (code 0421-warm up catalyst below t… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 satisfied customers
2001 Mitsubishi eclipse: o2 sensors..Upstream..exhaust manifold
2001 Mitsubishi Eclips GS. Computer code indicates trouble between o2 sensors. Upstream is in exhaust manifold. Downstream is before cat converter. Is this correct for a two sensor application. It loo… read more
Doug
Doug
ASE Certified Technician
Vocational, Technical or Trade Scho
7,006 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

7,006 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