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What does it mean when the engine warning light comes on for a 2002 Dodge Dakota?
Wiki User
∙ 12y ago
You would have to connect a diagnostic tool to it to find out exactly, but, in general, the yellow check engine light indicates a problem with the emissions control system. Usually this doesn't significantly affect how the vehicle runs, and isn't a critical problem, but it does mean that the engine either may be using more fuel or may be polluting more, or both. And, if you live somewhere that requires vehicle emissions testing, your vehicle will fail automatically if the check engine light is on.
This may or may not be your problem, but (perhaps) the most common cause for the check engine light to come on in Dakotas of this age is cracked vacuum lines, particularly at a valve located near the battery, and/or near the fuel vapour canister under the cab inside the driver's side frame rail. Sometimes you can just trim the line a little shorter to eliminate the crack, but sometimes you'll need to replace the whole line. Either way, it's a really cheap fix if you do it yourself.
Also worthy of note; The check engine light can only be turned off using certain diagnostic tools, which can make it difficult to figure out if you've fixed the problem, so if you opt to purchase one, make certain that it has the ability to reset the light. Decent ones run about $50-$200.
Wiki User
∙ 12y ago
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