So I just bought a 2000 Jeep TJ. and I owned a 2000 Jeep TJ before I bought this one, which I flipped. And this Jeep has a different check engine light than my last one, this one says "check engine". While my other one just had a picture of the engine symbol. I was wondering if someone could help me figure out what date this is from and if it has been replaced,thank you.