The service engine soon light on a 2002 Altima 3.5SE means you need to have some sensors replaced. Depending on when your car was built, it may have 2 or 3 recalls. The major recalls are for a crank shaft sensor and two cam shaft sensors. You wouldn't expect a 'service engine light' to trip on a 2002 model, but this is common to new model year vehicles. The light on my '02 Altima 3.5SE went on last week with only 28k miles. The dealer replaced the sensors and found the light was tripped more than likely from the cam shaft sensors, since a problem with the crank shaft sensor should normally prevent your engine form starting. Get this recall/warranty service done soon. I noticed poor gas mileage and slower acceleration. Cam sensor could cause slight misfires which could bring up your fuel consuption. 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 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.
When the "service engine soon" light comes on inside your 2002 Ford Escort, it means that a sensor has told the engine that it is time for a scheduled service. This is generally timed at a certain number of miles or after a certain period of driving time.
That is the Service Engine Soon light. You need to have the vehicle checked at your earliest convenience.
The engine computer has detected a malfunction and set a code.
what dose the code u1001 mean for a 2002 Nissan maxima
The check engine light means there is a problem with the emission systems on the vehicle. The service engine light means that a regular schedule service is needed. Most of the time this means you need an oil/filter change.
Automatic Speed Control Device. Cruise Control Bad
what does codep1273 mean on a nissan altima
it's a system which tracks your service needs
Trouble code P0507 means:Idle control system RPM higher than expected
2.5 refers to the engine displacement, a 4 cylinder motor. The 3.5 is the V6 motor.
This website has all of the OBD codes. http://autorepair.about.com/cs/troubleshooting/l/bl_obd_4.htm
There is something wrong. Go to auto zone and have the codes read for free.