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Assuming you are referring the the Check Engine Light, it can be many things. The check engine light is on because the ECU has detected a problem with the emissions system. Have the ECU scanned with an OBD2 scan tool which will retrieve the code that has been set. This code will tell you what part of the emissions system is being effected.
What else can I help you with?
1999 ls Lexus check engine light comes on?
why do check engine light comes on
What does it mean when your engine light comes on and a wrench light comes on a 2004 ford thunderbird?
It means your engine needs attention.
How Do you reset the Engine Service light on a 1996 Infiniti I30?
A reset Engine Service Light comes on when an issue comes up with in the engine. This light can be reset by a tech or by fixing the problem.
Is the engine check light supposed to turn on after changing radiator?
No, the check engine light comes on when the computer detects a malfunction and sets a code.No, the check engine light comes on when the computer detects a malfunction and sets a code.
Why your truck 2000 5.9 cummins has the engine protection light on?
The check engine light comes on when the computer detects a malfunction and sets a code.The check engine light comes on when the computer detects a malfunction and sets a code.
1998 ford explorer check engine light?
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.
Mazda tribute engine light?
When the check engine light comes on, it's a good indication that something is wrong with your engine.
Why engine light not on?
"Check Engine" light comes on when you turn ignition switch on and should go off when engine cranks.
Would replacing an exhaust cause the check engine light to come on?
Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.
Why would the engine light come on in your 2006 ford focus?
The check engine light comes on when the computer has detected a problem with the emissions system. The engine maintenance light comes on when the engine needs some scheduled maintenance such as an oil/filter change.
What do you do if the check engine light comes back on after replacing the speed sensor?
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
What does it mean if the transmission temperature light comes on after the check engine light comes on?
A low battery can cause the electrical system to flash check engine lights
