Malfunction indicator ,check engine lamp . service vehicle soon etc.. Trouble Codes Check Engine Light On
It could be anything at all that is electrical or sensor-related in nature. Your car is an OBD2 car (for emissions), and it's a very strictly-controlled system. As a result, pretty much anything that fails will cause the light to come on and will store a code in the computer. Go to AutoZone and ask them to scan your computer for codes - they'll do it for free, where a dealer will hit you for up to an hour's labor. They'll tell you the fault codes, which will point you in the right direction for the fix. Get the codes that come out of the scan and post them as a reply here and we can go from there.
SOURCE: Malfunction indicator lamp
The Malfunction Indicator Lamp or MIL (Also called the check engine light or service engine soon light) comes on when the on board computer detects an issue with the operation of the engine or transmission.
The best thing to do is to take the vehicle to an auto parts store like Autozone and have them hook up their scan tool to the vehicle and read the code. They can read it, tell you what it is and also tell you what the code means.
If it is pointing to a faulty component or sensor and you replace or repair the component the the light will go off on its own after the computer sees that the malfunction is no longer present.
You can have the code cleared, but if whatever caused the light to come on in the first place is not addressed then it will just come back on eventually.
SOURCE: malfunction indicator lamp in my toyota corolla is on how i fix?
The check engine light also called the malfunction indicator comes only when the computer control unit (called the PCM) senses a fault in the electronic controls of the engine and/or the emission system, there are about 200 possible faults that turn the light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen and Autozone parts stores do this testing for free.
SOURCE: malfunction indicator lamp illuminated on daewoo lacetti
The check engine light comes only when the computer control unit (called the PCM) senses a fault in the electronic controls of the engine and/or the emission system, there are about 200 possible faults that turn the light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test
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