Question about 2003 Nissan Altima

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What does the "service engine soon" indicator light specifically mean?

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When the service engine soon light is illuminated in your vehicle, it means that the on board self diagnostic system has detected a fault either in the engine, transmission, or accessory controls. when this light is illuminated, it means that there is a code stored in the vehicle memory which can be extracted with a code reader. any garage should be able to do this for you. good luck!

Posted on Aug 29, 2010

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Basically the car has a computer that works out,for the type of driving,how many stop/starts,the duration of the drive,etc ,Then it tells you that you need a service(rather than in the old days of doing a service every 12 months/?mileage)for example on a vw you could go 40k in one year and only have one service,and one oil change...clever eh.....

Posted on Aug 28, 2010

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Posted on Jan 02, 2017

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SOURCE: service engine soon indicator on

check gas cap

Posted on Feb 23, 2009

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SOURCE: Service engine soon lights on (Nissan Quest 2007)

This is most likely the O2 Sensor however, that light may also come on for a vacum leak or anyone of a number of other sensors. Take the vehicle to Auto Zone and ask them to use a code reader on it and tell you what the code is for. If the code is for O2 sensor as I suspect the part will cost about $40 and take maybe 20 minutes to replace your self. ($40 for part + 5 to 10 for the special socket) If it shows anything else you may want to take it to a mechanic to have the vehicle diagnosed.

Posted on Oct 08, 2009

Thunder55
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SOURCE: How do I reset "service engine soon" indicator light?

Either take it to a dealership and have the mechanic do it for you,,or purchase a code reader for your vehicle of ebay and do it for yourself.

Posted on Jan 19, 2009

  • 107 Answers

SOURCE: service engine soon light

need to pull codes with vehicle specific function and read codes

Posted on Jun 27, 2010

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SOURCE: 2004 pontiac grand am service engine soon light

I have the same car and if the gas cap is loos for any reason the service engine light will come on so check that. If it is it will turn off in a few days after you tighten it.

Posted on May 13, 2009

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What does the service vehicle soon light on a 2001 chevrolet impala mean like whats it for?


Since the "Service Engine Soon" Light is primarily an emissions monitor there is no need to panic. Unlike the overheat or charging system red warning lights that require an immediate shutdown of the engine, this one is advisory and is yellow or orange. Even though it doesn't indicate the car is likely to quit, it is calling out for help. Think of the "Service Engine Soon" lamp as if it were the glowing tip of a cigarette. Your car is polluting as well as performing below its design potential.


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Dec 20, 2012 | Cars & Trucks

1 Answer

Why would my service engine soon light be on


  • Hi, I can help.
  • The service Engine Light Soon light means it's time for an oil change,

  • You can turn this light off real quick by following these steps.
  1. Turn the key to ACC.
  2. Press the gas pedal down all the was three times in fairly rapid succession.
  3. The service engine soon light will begin to blink and then disappear.
  4. Turn the key to off.
  5. now start your truck.
  6. The light will now be off.
  • This should be done after every oil change.
  • All the light means is that the PCM has indicated that you have driven the required miles for an oil change. A reminder light if you will.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.

Regards, Tony

Aug 27, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

What do a wrenchwarning light mean


this usually indicates service engine soon light(possible code in computer)or it is a maintenance service light indicating a maintenance should be done to the car.

Mar 18, 2011 | 2006 Ford Five Hundred

2 Answers

"service engine soon" light on


should have two lights check engine and service engine soon.check engine means there is a malfunction.service soon is reprogrammable,when you change you oil. check you owners manual for reset.

Dec 04, 2010 | 2001 Buick Century

2 Answers

Yellow check engine light on in my 2006 mitsubishi raider, what does it mean?


it means emission control malfunction, could be one of many causes, have the engine scanned by a competent tech

Nov 19, 2010 | 2006 Mitsubishi Raider

1 Answer

Check engine soon...what does that mean???


check engine soon?

I have an amber Service Engine Soon light on my car that indicates that there is a problem with the engine that should be looked at soon.

Your car has an OBD-II system on it that allows the code to be read by a scanner that can lead to diagnosing and repairing the problem.

Some cars have an 'idiot' light that comes on at certain service intervals usually controlled by the odometer.

This can be reset by the scanner.

Jul 03, 2010 | 2001 Mitsubishi Eclipse

1 Answer

What do the engine lights mean?


Which engine lights? (SES) Service Engine Soon light? You need to be more specific. Thanks

May 20, 2010 | 2001 Chrysler Town & Country

2 Answers

Service engine soon light came on


The computer or ECM constantly tests operation of all sensors and components. When any of the sensor signals is missing or out of normal range, the ECM sets a fault and illuminates the "Check Engine" or "Service Engine Soon" light also called MIL (Malfunction Indication Light) storing the corresponding Diagnostic Trouble Code (DTC) in the ECM memory.

The same happens if a mechanical component of controlled system fails. For example, mechanical problem inside the transmission also can turn the "check engine" light on. Even not properly closed gas cap will cause the "check engine" light to come on - the ECM constantly checks if the gas tank is sealed properly.

To sum up, when the "Check Engine" or "Service Engine Soon" light comes on and stays on, there is a problem with your vehicle. This could be a problem with the engine, transmission, or some emission-related component or system.

The stored trouble code can be retrieved with the special scan tool by the technician. The code itself does not tell exactly which part to replace, it only gives a direction where to look for - the technician has to perform certain tests specific for each code to find the exact cause of the problem.

Scanning for knowed exactly what fault code you have there.

Tell us news (remember rated this post).

Apr 14, 2010 | 1999 Buick Regal

1 Answer

Yellow service engine soon light


You will need to get an OBD reading. to know exactly why the light came on. the light alone doesnt mean anything specific, hence the need for the OBD reading to understand why. Most mechanics will do this reading for free.

Sep 23, 2009 | 1989 Oldsmobile Delta 88

3 Answers

What does service engine soon light mean?


this light means that a fault has occured in the electronic engine and/or emission control system, any time this light is turned on there is a trouble code set into the memory of the Powertrain control module, PCM for short, there are over 200 poss problems that turn this light on.

Sep 16, 2009 | 2003 Chevrolet TrailBlazer

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