Mitsubishi cars are produced by Japan’s sixth largest automobile manufacturer Mitsubishi Motors Corporation. Most Mitsubishi vehicles are used in different motorsport competitions like the Dakar Rally, the World Rally Championship and the Southern Cross Rally.

2,551 Questions
Mercury Sable
Ford Taurus
Check Engine Light

What causes the check engine light to come on and how to read the trouble codes in a Taurus - Sable?

The check engine light (CEL for short) is triggered when one or more of the many sensors on the vehicle detects a not-normalreading,

There are 2 basic steps to determining the cause of the CEL coming on:

  1. Have the codes read - many places offer to read the engine codes for free. Autozone even provides a printout of the codes, and a short description of common causes
  2. Research those codes! Find out the true cause and reason for the not-normal reading. It is not often that the sensor itself is bad and requires replacing.

    There are countless sources of information on engine DTC (diagnostic trouble codes) on the internet - including WikiAnswers!

Real-life examples:

  • DTC code P0402 on 98 Tracer - replaced the EGR valve, light came back. Made my daughter live with it for 2 years. Yesterday I had a few minutes while waiting for the oil to drain and poked around the engine - found a small 2" piece of rubber hose that had softened and collapsed right where the PCV connects. A free piece of hose from Autozone and the light cleared after a few drive cycles!
  • Major auto parts chain told me my TSP (Throttle position sensor) was bad due to the CEL being lit up (might have been a P1120 DTC). $40 and 10 minutes to replace - ((_#*&$ light came right back. A few days ago, after doing some reading, I bought a $4 can of throttle body spray cleaner - used 1/2 the can on my 98 Sable - voila! CEL is gone again!

Pay attention to those check engine lights - they're there for a reason. And with the internet today, you can readily find the information to keep your car healthy, and even save some $$ in the process.

(end of editorial rant,... and no more acronyms!)

NOTE:This light has 2 other names it is referred to:
  • Service Engine Soon - SES
  • Malfunction Indicator Lamp - MIL
AnswerYour owner's manual will tell you. It more than likely means it is time to change the oil. It can also mean there is a problem with the emissions controls, depending on what term Ford uses. AnswerIf your car is a year 96 or newer, this usually means there is a problem with your emissions system. This light will also detect a problem with your transmission, as some transmission problems will in some way affect gas efficiency, therefore affecting emissions (i.e. problems with overdrive performance) I know, I'm having this problem now. I have a 97 Mercury Sable. AnswerCHECK FOR VACUUM LEAKS! Everytime my engine light comes on, I get it checked at Autozone and they always tell me its a vacuum leak. I then have to manually search for a "sssss" sound on every vacuum line and replace the hose. The first time this happened, I found a huge hole in the hose next to my PCV valve, causing that to clog. I would recommend checking there first.

You need to have it scanned,most of smaller repair shops will do it a reasonable price,and give you the trouble code.

Check engine light staying onYou need to go to a reputable shop and have them test the vehicle. They will use a scan tool to check for codes, then they will have an idea what system is causing the light to come on.

Just finding out the code doesn't tell what's wrong, so it may not be worth trying to buy a cheap "code reader". Find a shop you trust and take the vehicle to a professional.

AnswerThe scanner / code readers are very inexpensive now - I've seen them as low as $30. Autozone & Harbor Freight are just 2 places to look.

BEWARE - the parts stores are very happy to tell you the DTC code (Diagnostic trouble code), and then encourage you to buy the cited part.

For example, a P0171 or P0174 indicate an oxygen sensor issue - will buying and replacing the O2 sensor FIX the problem? NOT AT ALL LIKELY. Don't just blindly buy the part - been there, done that.

Get the codes read - then research them on the net or talk to a reliable mechanic.

Its the emissions light. On my mercury sable when I get bad gasoline the light tends to go on. Usually if I run the car almost empty and then fill up again it goes out. If not try disconecting the battery.

It could be one, more, or MANY things. That's why it is suggested that you take it to your dealer if it is still under warranty. You can take it to AutoZone and have your "Codes" (what causes the Check Engine Light or "SES" Service engine soon light) read.

It will usually tell you what caused the SES and it should be fairly simple to fix, such as a malfunctioning O2 Sensor.

Some things however can be very complex and it is recommended an AST Certified Mechanic takes a look at the vehicle.

most likely a severe engine misfire. you need to have it checked for codes

AnswerIt simply means that the engines computer is picking up a a problem from one of the sensors on the vehicles All of the sensors work together and feed their information to the Engines Computer (or ECU). The main reason for all of these sensors is to accomplish maximun fuel economy while buring as clean as possible thus keeping pollution and emissions to a minimal. AnswerThe light is on because the computer has detected a problem with the emissions system. This may be nothing more than a loose gas cap, or as serious as a bad catalytic converter. Have the computer scanned for fault codes. This will help to find the problem. After the problem is corrected the light can be reset with an OBD2 scan tool. AnswerPull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self test the computer runs the car through, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist. It is emission related. See "Related Questions" below for moreAnswer

Open and read your owner's manual. There you will find the answer to your question. But I will tell you. The computer has detected a fault with the emissions system.


Pull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self tests the computer runs the car through a drive cycle, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist. It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that none are still active.

The " check engine light" is by far one of the most misunderstood technological advances by the public. I am sure I will revise this as time goes on, as it is an in-depth understanding for the public. It is a warning light that is illuminated when there is a problem with the EMISSION SYSTEM only. Emission system being the pollution control system. Don't get a hard on against it as it is a good thing once you understand it. One point that was brought up a a recent meeting of technicians was that the amount of hydrocarbons is greater when the gas cap is left off than when the engine is running. Hydrocarbons are part of pollution emitted as gasoline evaporates. Going a step farther, one facet of the emission system is the "Evaporative" portion. This is when the fumes from the gasoline are leaking from the system into the outside air. This is one part of the emission system that can trigger a check engine light. I would say that about 7% of the vehicles that have a check engine light are the result of a loose or inadequate gas cap. But understand that many scenarios are possible with the "check engine light" The vehicle's powertrain computer (note that some vehicles have 17 different computers) will run a series of self-tests. They will only run under certain criteria. And they can be vastly different from manufacturer to manufacturer. Some self-tests are not run until preceding ones have run successfully. So if there is a problem in one particular area that is preventing another self test from running, you can have a situation where one problem is fixed, but another still exists. If you fix a problem and drive the car through a drive cycle that sets the monitor (or self test) the light will go off as it passes that criteria that triggered it in the first place. After 1996, the auto industry went to a idea called OBD II (on board diagnostics). This was to get all the manufacturers onto a similar plane for troubleshooting and powertrain control. While they still differ vastly, many corrections and adaptations were made for technicians to better fix the check engine light problems. Prior to this there were so many different and poor troubleshooting data from a check engine light problem that resolving the problem was much more difficult. Many early warning light of this nature were set to illuminate based on mileage. An Oxygen sensor was one of the things that were meant to be replaced when that mileage was hit. This is much like many current "Change oil lights� that are set based on a pre-set mileage.

AnswerIt will be impossible to give you any better than a broad answer here, because there are literally hundreds of possibilities as to why a check engine light(CEL) comes on. The system would have to be scanned to retrieve whatever fail codes there are. Then we would use a manual (that is literally 3 inches thick)that contains flow charts with pinpoint tests, using a voltmeter, to hand diagnose, and find out what is wrong. This process can take a few minutes, it may take a couple of hours, depending on what is actually wrong.

Now here is the "why" of a CEL: What is actually turning on the CEL is the Powertrain Control Module(PCM), commonly known as the engine control computer. Inside of a PCM there are actually two separate systems. One is control, the other system is diagnostics. PCM diagnostics acts as "big brother," constantly looking over the shoulder of the control side of the PCM. Diagnostics is constantly monitering systems to see if the expected voltages and values are present. For example: If the PCM diagnostics knows that it has been so many minutes since the engine was first started, then the engine temperature should be around 195 degrees. In our senerio, if the engine is still 160 degrees, it sees a problem, and sets the CEL. The technician has to use pinpoint diagnostics to see if we have a stuck thermostat, if the Engine Coolant Temp(ECT) sensor if sending a false signal, if the wiring between the ECT and the PCM is bad, or if the PCM is faulty and interpreting the signal received from the ECT incorrectly. But the PCM is not capable of monitering everything all at once, so it basically goes down a checklist, over and over again, as you are driving down the road. Sometimes a problem can come and go intermittantly, at the right times so as to avoid detection by the PCM. That is why sometimes a CEL doesn't always come on everytime there is a problem. Sometimes you can unplug a sensor even while the car is running, and it takes a while for the CEL to come on, just because the PCM diagnostics hasen't gotten back around to looking at that area yet.

Our senerio only talked about one area that a PCM moniters. There are dozens of sub-systems that the PCM looks at, and dozens of possible failures within each of those sub-systems, that could cause a CEL.

Most often the cause of this light staying on is a bad EGR valve or a bad O2 sensor.


Answeryou might want to check your gas cap if it is loose it can trigger your check engine light
Dodge Stratus

Where is the transmission filter on a 2004 Dodge Stratus with the 4-cylinder Mitsubishi engine It is not in the pan?

Some do not have a filter. check with transmission shop they should be able to tell you


How do you remove the headlights Mitsubishi Express?

For 1981 - 1982 model (may work on newer models) proceed as follows:

First undo the two screws in the indicator/parking light lens and remove the lens and the body of the indicator/parking light which has the two bulbs in it.

Then you will see two square plastic blocks where the screws screw into. On the backs of these block are two legs. Squeeze the legs together and push the blocks forwards to remove them.

Then the headlight/parking light/indicator surround will be loose. Tilt the outside edge of the surround forwards and then pull it to the outside of the vehicle. It will then be removed.

The headlight is held in with three screws with springs behind the headlight assembly. You will notice that there is a hole with a slot next to/under the screw head. Do not turn these screws with a screwdriver, as they adjust the headlight aim.

Push on the headlight and rotate it until the screw heads drop through the hole. Disconnect the wires to the headlight. by removing the plug. Remove the sealed beam from the assembly by undoing the 3 or 4 screws on the outside of the ring.

Reassembly is reverse of above. (Don't forget to connect the plug!)


What is the normal engine operating temperature for a Mitsubishi?

What ever the thermostat is set for, probably 195 degrees.


What is overdrive for on a pajero?

for motorway driving

Mitsubishi Lancer

Where can you get a wiring diagram for a Mitsubishi Triton 4x4 made in 1996?

Hey buddy I found this link, I have a 1993 4X4 Triton V6 and was asking the same question......I bought a haynes manual and found it ok, but the wiring diagrams were worthless....try this link here appears to better quality than a haynes.......

Mitsubishi Eclipse

Why does your 2001 eclipse shift hard?

If you have manual most likely you will have to fix the clutch. In case of automatic transmission start from checking the condition of the fluid (smell, viscosity, color). If it has to be replaced do so.

You might need just add fluid, thus second step is to check the level.


How do you pronounce Mitsubishi?


Mit (mittens) - soo (soon) - bi (big) - she


What causes a flat spot on acceleration in a 1991 Mitsubishi Magna?

Replacing the fuel filter may fix the problem. Also check the air filter and replace if necessary.

Turn Signals and Hazard Lights
1995-2005 Chevy Cavaliers

How do you replace the front turn signal bulb located on a 1992 Mitsubishi Expo LRV?

On the inside behind the light is a bolt with a Phillips head screw, remove this. Gently push the headlight forward towards the front of the car, you may have to use a wood stick or screwdriver, gently to not mess up the paint and the light will slowly work its way forward. Reassemble by just pushing the light back till the screwholes line up and reinsert screw.

Spark Plugs and Wires
Ford F-250
Ford F-350

How do you keep your Mitsubishi from stalling when backing up from a cold start even after plugs and wires have been replaced?

your vehicle needs an idle relearn needs to be done by a Mitsubishi agentmay also have a faulty stepper motor for the idle control or the battery may be losing to much voltage during start up

Car Batteries
Headlights Tail and Brake Lights
Mitsubishi Montero, Pajero, and Shogun

How do you replace the ECU on a 1999 Mitsubushi Montero Sport?

I'm not sure of that models location of the the ECM, or ecu, but I'm betting it's under the passenger side seat, or located on the right side passenger kick panel, if it's under the seat, removing the seat makes it way easier, unplug the old ecm's connector(s), undo 3-4 10mm bolts that ground the ecm to the trucks metalwork, install the new ecm by boldint it to the metalwork first to insure you do not accidentally short with static or what not the new ecm, then plug the harness back in. If it's on the kickpanel, same process, just be prepared to get a crick in your back when you take it out.

Mitsubishi Eclipse
Mitsubishi Lancer

How do you remove the dash board on a 2002-2004 Mitsubishi Eclipse?

remove the screws. make sure you don

Car Batteries
Jeep Grand Cherokee

Is installing a keyless remote system on a '94 Mitsubishi Expo a do-it-yourself job?

No. If you have no experience, TAKE IT TO A PROFESSIONAL. Im telling you, dont do it. You can very easily fry something in your car. Remote starts are nothing to mess around with. Remote starts are in a whole different league than putting stuff like decks, speakers, amps, whatever. Seriously, you make one mistake, it could cost you hundreds to thousands of dollars to replace it. COPY AND PASTE, THIS MAY HELP YOU ON A DO IT YOUR SELF

Honda Accord EX
Honda Accord LX
Honda Accord DX

Where is the starter located on a 1988 Mitsubishi Mighty Max 4 cylinder 2 wheel drive manual transmission?

beast way to describe it, put your front end on jack stands, crawl under on the driver side, look up and to the right. it is located behind the right wheel inside the engin compartment. You'll need to work from underneath mostly. but may fin you need to jockey it into position from the top.

Headlights Tail and Brake Lights
Chevy Blazer S-10
Ford Explorer XLT
How To

How to replace headlight off on dimmer high beam and turn signal switch on a 1994 Mitsubishi Expo lrv?

another questionI have been looking for a turn signal switch and can't find one.

To replace it you should just be able to take off the cover around thesteering column and snap it in where the old one was. I would be able Tobe more detailed if I could find a replacement.

Dodge Dakota
Mitsubishi Mirage

The instrument panel has stopped working on your 1999 Mitsubishi Mirage can't see speed or gas level How can this be fixed?

i am going on past experience here, but newer dashes(instrument panels) are all digital and just plug into a holder or wiring harness,the days of speedometer cables are basically gone forever.So,disconnect battery and find shroud screws and remove cover,then find instrument cluster screws and undo,cluster should then come out,look on back side for wiring plugs.

get a good eye loop and be in well lit area and inspect the pins were they are soldered into the board.If you find a solder connection that looks like it has a round crack or i/2 round crack then there is probably the problem.This called a cold solder joint.You can resolder if you know how or find an electronics buddy who knows how to solder and let him/her do it for you. If you have instrument with digital numbers it is on possibly the digital display has gone bad,in that case it's junk yard time or purchase a new one.hope this helps.

Car Computers and Sensors
Mitsubishi Eclipse
Mitsubishi Lancer
Mitsubishi Mirage

Where is the IAT sensor on a Mitsubishi FTO?

I belong to the FTO owners club here in England. I found some information you may be looking for.

Transmission Fluid
Late Model 1979-New Ford Mustangs
1995-2005 Chevy Cavaliers

Where is the transmission dipstick located on a 1995 Mitsubishi Expo?

You need to look down low, below the battery area. There is only a stubby round knob coming straight up from the front edge of the transmission casing itself. There is no tube coming up and extending the stick upwards, you need to reach way down low. Use a flashlight the first time if possible. Steve in MN

Cars & Vehicles
Turbo and Superchargers

Can you supercharge a '92 4-cylinder Mitsubishi Triton engin?

Theoretically you can supercharge any internal combustion motor. Practically, there probably is not much in the way of off-the-shelf parts available to supercharge a 2.4 litre Mitsubishi motor. In addition, the relatively small size of the motor (compared to many supercharged motors) means it would be difficult to achieve large power or torque gains.

If you really want to go down this path I would advise a turbo instead of a supercharger.

Mitsubishi Lancer
Ford F-350

Where can you find a wiring diagram for the Mitsubishi Lancer?

wire / color / polarity / location....

12volts white + ignition harness

Starter black/yellow + ignition harness

Ignition black/white + ignition harness

Accessory blue/black + ignition harness

Second Accessory blue/white + ignition harness

Notes: Not required for remote start.

Keysense blue ignition harness

Notes: The wire rests at ground with the key out of the ignition cylinder, and goes to an open circuit when the key is inserted.

Power Lock purple - driver kick, door harness

Power Unlock lt. green - driver kick, door harness

Lock Motor blue/red 5wi driver kick, door harness

Unlock Motor white 5wi driver kick, door harness

Parking Lights+ grn/yel (L), grn/wht (R) + wht plug bottom of fuse box

Hazards white - hazard switch

Turn Signal(L) lt. green or white/blue + driver kick, harness to rear

Turn Signal(R) yellow + driver kick, harness to rear

Reverse Light brown + driver kick, harness to rear

Door Trigger white - wht plug bottom of fuse box

Dome Supervision use door trigger

Trunk/Hatch Pin green/orange - light in trunk

Factory Alarm Arm N/A

Factory Alarm Disarm gray - driver kick, door harness

Tachometer black/yellow or black/green ac either ignition coil

Brake Wire green + brake pedal switch

Parking Brake blue/red - parking brake switch

Horn Trigger blue/red or red - steering column

Notes: It is blue/red on the standard models and red on the Evolution VIII models.

Immobilizer Bypass Module: Required: Yes Type: Transponder Part #: DEI 555U (requires a programed key for remotestart)

Notes: Only the Evolution VIII models have the immobilizer.

Mitsubishi Mirage
Timing Belts and Chains
How To

How to time a Mitsubishi mirage engine?

You'll need an inductive timing light. Connect to the battery, and clip the induction lead over the #1 spark plug wire. Start the car. The timing mark on the crankshaft pully will appear stationary when you point the light at it, and should correspond to the timing guage(mounted on the timing belt cover). Look on the emissions tag in the engine compartment to determine the correct setting. You'll need to loosen the nuts that hold the distributor , so you'll be able to rotate it. Watch your fingers, tie back your hair, and avoid loose fitting clothing! What year is your car, and what is the timing recommended on the emissions tag?

Ford Explorer Eddie Bauer
Ford Ranger XLT

Can a 1987 Mitsubishi tredia-l be towed with all four wheels on the ground and if not what will happen?

Is this vehicle all wheel drive? The vehicle is fwd so yes it can be towed with all 4 wheels on the ground.


What is wrong with a 1995 Mitsubishi Montero with 150K miles that smokes runs hot under strain and uses a lot of oil?

Answer == Rebuild/replace the engine.


What are the timing specs for a 1994 Mitsubishi 6000 2.4 liter pick-up?

5 degrees before top dead center


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