Question about 2002 Mitsubishi Diamante

1 Answer

P0431 I have a 2002 Mitsubishi Diamante V6. The engine check light came on and i got it scanned at Autozone. The error code was P0431. Also i noticed some smoke coming out of the hood today, it was coming from somewhere close to the engine. What could be the problem?

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Mitsubishi Master
  • 21,873 Answers

Well code 431 means the computer does not think the catalytic converter is working correctly. The engine computer uses data from the O2 sensors to monitor the cat.
The actual problem could be the cat, one of the O2 sensors, a fuel problem, or other things. The O2 sensors would need to be watched with a scanner to find the issue.

Posted on Jul 17, 2013

  • 1 more comment 
  • Akshay Madan Jul 17, 2013

    Thanks Stephen i would like to elaborate a little more about the issue.Since a few days i used to notice some smoke which was very light in color coming from my hood when i used to park my car after driving. i could not smell anything burning and it was not from the radiator. Then the engine check light came on after 3-4 days. Then i went to autozone and got the code. Now today i noticed slightly thicker smoke coming from the hood and was a little dark in color. i opened the hood and noticed it coming from close to the engine

  •  Stephen
    Stephen Jul 18, 2013

    I really can't comment on the smoke issue without knowing where its coming from. You will probably need a shop to check out the sensors and cat to proceed. The O2 sensors run over $100 each and the cat is several hundred. So you will want some promises replacing anything will fix the problem before spending the money.

  •  Stephen
    Stephen Jul 18, 2013

    With the cost of the parts you can't afford to guess.

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 61 Answers

SOURCE: abs fault

Sounds like a steering wheel sensor. Call Mitsubishi back and tell them that, or try a different dealer. Sensor detects the angle of the steering wheel when determining ABS operation parameters (I think)...

Posted on Jun 20, 2008

  • 37 Answers

SOURCE: Radio code needed for 01 Mitsubishi Diamante

you have to go to a new car dealer with radio and title of car

Posted on Jan 11, 2009

  • 73 Answers

SOURCE: 2001 Mitsubishi Diamante OBD2 cod p1751... where is the A/T relay

Has this symptom occured several times or just a one off? If the trans works OK I wouldn't mess with it.You know what they say about sleeping dogs! I think Mitsis are not that strong in the auto trans department

Posted on May 16, 2009

mohd_sikande
  • 1 Answer

SOURCE: 1997 mitsubishi diamante stereo code

need a radio code for a 1997 mitsubishi diamante

Posted on Jul 27, 2009

  • 972 Answers

SOURCE: P0442 code-2004 mitsubishi diamante

its an evap system small leak. most common cause is a loose gas cap. but could be any leak in the tank vent system

Posted on Apr 21, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I am trying to find the location for my crankshaft position sensor on my 1999 Mitsubishi Diamante


Your 1999 Mitsubishi Diamante is a 3.5L MFI SOHC 6cyl engine.
MFI = multi-port fuel injection
SOHC = single overhead camshaft
This answer covers Mitsubishi Diamante1.8L, 2.4L, 3.0L (SOHC and DOHC), 3.5L, and 1997-2000 1.5L Engines.

2.4L engine shown, others similar.

Fig.1 - CKP position and its two mounting bolts
am-trying-find-location-crankshaft-vkz3iz4htmqkl2kxsk34hqrj-3-0.jpg

In Fig. 1, the two arrows point to the CKP (crankshaft position sensor) mounting bolts to remove. 2.4L engine shown.

Fig.2 - CKP reluctor removal
am-trying-find-location-crankshaft-vkz3iz4htmqkl2kxsk34hqrj-3-2.jpg
Remove the sensor and slide the reluctor wheel off of the crankshaft-2.4L engine shown.

1. Disconnect the negative battery cable.
2. Remove the timing belt.
3. Unplug the sensor connector.
4. Unfasten the two retaining bolts, then remove the CKP sensor from the vehicle.
5. Installation is the reverse of the removal procedure.

Reference: Autozone online repair guide: Mitsubishi Galant/Mirage/Diamante 1990-2000, at
www.autozone.com

Fig.3 - photo - new 99Diamante CKP, a Wells part #SU4313
am-trying-find-location-crankshaft-vkz3iz4htmqkl2kxsk34hqrj-3-5.jpg

Jul 31, 2016 | 1999 Mitsubishi Diamante

1 Answer

Service engine soon light is on and tcl off light flashes on my 2003 mitsubishi diamante


Goolge the codes
OBD PO107
OBD PO122
2003 Mitsu Daimante PO411
etc
What you should do -- is never go to a dealer
Local shop down the street

Jul 20, 2013 | 2003 Mitsubishi Diamante

2 Answers

Check engine light on but car runs good




The check engine light comes ON when the cars computer (the ECU) notices any kind of electrical problem in car. In this case I suggest you to get your car scanned at autozone service center. It's absolutely free. In scanning the error codes will be retrieved.As per the error code you can check which part is faulty and replace that particular part. This will solve the problem.---------- This will help. Thanks. Helpmech.


Mar 01, 2011 | 2000 Toyota Corolla

2 Answers

Eng. light is on what can be wrong


1999 ford explorer Check engine light is on ?------------

The check engine light comes ON when the cars computer (the ECU) notices any kind of electrical problem in car. In this case I suggest you to get your car scanned at autozone service center. It's absolutely free. In scanning the error codes will be retrieved.As per the error code you can check which part is faulty and replace that particular part. This will solve the problem.---------- This will help. Thanks. Helpmech.

Mar 01, 2011 | 1999 Ford Explorer

1 Answer

2007 check engine light is on. The truck is running great


Getting the car scanned is advisable.Check engine light on?
The check engine light comes ON when the cars computer (the ECU) notices any kind of electrical problem in car. In some cases the check engine light comes on then turns off. In that case the exact error is not getting confirmed so this happens. But once the problem gets confirmed the engine light will remain permanently ON till the problem gets solved. In this case I suggest you to get your car scanned at autozone service center. It's absolutely free. In case in car scanning, if any error code is retrieved then you can check which part is faulty as per the error code.--------------- This should help.Thanks.Helpmech.

Feb 01, 2011 | 2007 Chevrolet Tahoe

1 Answer

91 integra ok driving at mid rpm range no hills or coasting check engine light comes on car runs rough and dies. restarts and runs ok but dies 5-10 minutes later


Car runs rough and dies.The issue indicates fuel pressure problem.But as you mentioned check engine light comes ON.The check engine light comes ON when the cars computer (the ECU) notices any kind of electrical problem in car. Once the problem gets confirmed the engine light will remain permanently ON till the problem gets solved. In this case I suggest you to get your car scanned at autozone service center. It's absolutely free. In case in car scanning, if any error code is retrieved then you can check which part is faulty as per the error code. At autozone they also deal in parts.So if any part checked out faulty then you can get that part replaced as per the code.-------------thanks.Helpmech.

Dec 16, 2010 | 1991 Acura Integra Hatchback

1 Answer

Check engine light on


The check engine light comes ON when the cars computer(the ECU) notices any kind of electrical problem in car.In some cases the check engine light comes on then turns off.In that case the exact error is not getting confirmed so this happens.But once the problem gets confirmed the engine light will remain permanently ON till the problem gets solved.In this case i suggest you to get your car scanned at autozone service center.Its absolutely free.In case in the car scanning,if any error code is retrieved then you can check which part is faulty as per the error code.In case if no error code is retrieved then you can continue driving,till you get any confirmed indication. ---------- This will help.Thanks.Helpmech.

Nov 15, 2010 | Mitsubishi Lancer Cars & Trucks

1 Answer

2001 Mitsubishi diamante Service engine light on.


Try finding out what the error is, and get it fixed. I twill keep coming on if you don't address it.

Mar 20, 2010 | 2001 Mitsubishi Diamante

1 Answer

2000 Mitsubishi sedan with 6G74 V6 engine. Vacuum


I could tell you, but 1st you would need to sign up for my premium assistance plan.
The cynic in me was confirmed by your reply.
thanks anyhow

Feb 05, 2010 | 2001 Mitsubishi Diamante

1 Answer

Wanting to find out what a warning light means any sites that show what the warning lights mean on a 1999 mitsubishi diamante


When the warning light comes on, your car generates an error code which is helped to diagnose the problem.

Got a local mechanic or most any auto parts stores (usually free) and ask them to scan your OBD2 port.

Their scanner will download the error code and then they can tell you what the code means and start you in the right direction to make repairs.

Nov 28, 2009 | 1992 Mitsubishi Diamante

Not finding what you are looking for?
2002 Mitsubishi Diamante Logo

246 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts

yadayada
yadayada

Level 3 Expert

76673 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8531 Answers

Are you a Mitsubishi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...