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. Disconnecting the battery can create other headaches and will not likely solve your dilemma. Best bet is to contact the local snap-on dealer and have him refer you to a known good shop that specializes in this technology-he will know. The " check engine light" is by far one of the most misunderstood technological advances by the public. This is an needed in-depth understanding for the public. It is a warning light that is illuminated when there is a problem affecting 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
There could be several reasons why a Nissan Sentra service engine light is coming on. The car may need an oil change, tune up, or there could be a major engine problem.
An engine cylinder misfire has been detected
Take it to a shop and get the engine serviced. Kinda makes sense if you think about it.
It means that the engine computer has detected a malfunction and set a code.
You use the test monitor and scroll down to clear code
The service engine light is the same thing as a check engine light.
There are many causes for a service engine light. You need to have it checked for codes. Then you can diagnose from there.
The 'oxygen sensor'may need to be replaced on '96 Sentra when the check engine light comes on. The should be replaced on the '96 Sentra every 100k miles for better fuel efficiency and to protect the converter.
Yes, the Service Engine Soon light is the same as the Check Engine light.
A check engine light could mean many things on a 1988 Nissan Sentra. The light could mean anything to a fuel cap not being tight enough to bad spark plugs.
Trouble code P1446 means: EVAP Canister Vent Valve Malfunction (Closed)
Yes. I have a bad cylinder in the engine of my Saturn Outlook and it was detected by the check engine soon light.
its missing 4 cylinders sir!
To reset the check engine light first lift and prop up the hood of the 2002 Nissan Sentra. Then proceed to remove the negative battery cable for five seconds.
reset service engine light
You can clear a service engine soon light in an Infinite G35 by checking to see if the "check engine" light is flashing. If it is isn't, go ahead and clear the service engine light.
The pollution sensor is detecting unburned hydrocarbons. That usually means a cylinder is misfiring.
why service engine soon light on 1999 mustang
Teh service engine light does not mean you need to service the engine. It means that there is a problem. You should have asked the tech that had his hands on the car. Could be a bunch of things from an injector to a spark plug.
Rotten egg smell is usually associated with a bad catalytic converter. You need to have the code pulled to find out why the service engine soon light is on. Most auto parts stores will do this for free.
A 3 cylinder engine : Compact in size, cheaper to built, light in weight, Less fuel consumption. 4 cylinder engine: bigger in size, smoother sounding than 3 Cylinder engine.
The service engine soon is the same as a check engine light. It has nothing to do with an oil change.