Question about 2005 Ford Escape

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Car wont turn over and computer says service emission system is there some sort of way to reset this

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Take the negative battery terminal off and leave for 30 minutes and the computer will reset

Posted on Feb 06, 2010


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My emission light on my 1992 honda ascot innova wont turn off how do i fixit

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My 2001 x5 evap & catalyst report not ready, I reset my MAF OBDII Code ~70 miles before checking it, but...

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#1 Always be suspicious of dealerships , they are in the business of doing repairs that are not necessarry.
#2 Loose intake hose "could" cause the problem , but only if the loose hose was after the mass air flow meter.
#3 most likely problem with your vehicle is a faulty oxygen sensor in the exhaust system , but could be as simple as a loose gas cap. Get somebody to scan the car for codes , some parts stores will do it for free. That will tell you what the error actually is.
#4 sometimes codes will reset if the problem is no longer present , sometimes not. On most vehicles , you can reset fault codes by simply disconecting the battery for a few minutes. If you do this and the light is then off , but comes on again after a few minutes , or even a few days , then there is a problem that needs to be repaired.

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Emission control system Light has come on - it this a serious problem? Car going in for full service and MOT 21/2, will this be covered SUZUKI ALTO

Its likely to be your EGR (exhaust gases recirculation) system blocked or just a valve malfunction.
Since you are going for a full service ,they should sort it out by either cleaning the egr valve or replacing it.
Your car will not pass the MOT with that light on.
I dont know what engine you have in the Alto,so make any further comments.

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Feb 21, 2010 | 2000 Chevrolet S-10

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Our check engine light was on and we got the diagnostic and it was the gas cap and they reset the codes so the check eng ligh was off for almost two weeks before we took it back for the emission and...

Why my Check Engine/Service Engines Soon light comes on?
The engine computer or PCM/ECM
All modern vehicles have a computer or the ECM (Electronic Control Module) that controls the operation of the vehicle powertrain (the engine and transmission). The main purpose of this is to keep the engine running at top efficiency with the lowest possible emissions. With constantly growing demands for better fuel economy and new strictest emission regulations it's not very easy to achieve. The engine parameters need to be constantly and precisely adjusted according to various conditions such as speed, load, engine temperature, gasoline quality, ambient air temperature, road conditions, etc. That's why today's cars have much more electronics than in early days - there is a large number of various sensors and other electronic devices that help the vehicle computer or ECM to precisely control the engine and transmission operation and monitor emissions.
The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part.

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My check engine light is on in my car. We change the oil ourselves. Is there some sort of code or something we need to do to let the engine system know that the oil has been changed?

No. The check engine light has nothing to do with changing the oil. The computer has detected a faulty sensor, or some other emission related problem and turned the light on. You will have to have the computer "scanned" to retrieve the code and determine what the problem is.

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