The check engine light comes on when a problem with the emission control system has been detected - scan the vehicle for trouble codes in order to diagnose and repair the problem
The engine light stays on when the engine computer has detected an emissions related failure and set a code.
Yes, but if it stays on you should plan to take it in soon to have the engine checked. That is why the light is there.
If the check engine light is on, there's something wrong with the engine. Or, the computer is bad. One or the other. They don't set a light for no reason.
common problem with 1998 mystique check engine light on
There are several reasons the airbag light will stay on, in your 1998 Dodge avenger. The most common reason is the airbag sensor is not functioning properly.
try looking for the overide switch or auto lights and turn the other direction
The check engine light is the light shaped like an engine, or the light that states Check Engine (Soon). If this light comes on, it is time to see what the issue is with the engine.
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
You need an OBDII computer a) to read the reason for the check engine light, and b) to reset the error code if you know what caused the light to come on. If you don't fix the condition that caused the light in the first place, it will probably occur again.
catalic converter was removed, or needs replacing
If the check engine light is blinking , an engine cylinder misfire has been detected
By engine light I am assuming you mean the "Service Engine Soon" light. This light will come on indicating a problem with your vehicle detected by the On Board Diagnostics (OBD) system. The OBD system monitors engine performance and emissions controls.There are many problems that can cause the "Service Engine Soon" light to come on. If the light flashes, it means that a cylinder misfire has been detected. If it stays on steady, it could be any number of things, from a loose gas cap to a failing oxygen sensor. Your best bet would be to take it into a mechanic, or even some lube shops (i.e. Jiffy Lube) and have them scan it with their OBDII code reader. That will give you a better idea of what's going on.