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    jorgelopez7776's Avatar
    jorgelopez7776 Posts: 1, Reputation: 1
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    #1

    Mar 20, 2007, 07:36 PM
    The check engine light turned on,on my 2007 honda civic EX
    The check engine light turned on,on my 2007 honda civic EX when added a Cold air intake system? Can anybody help me I have took the battery off and turn it on to reset the computer and it works it removes it for about 4 miles then its on again please help me thank you.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Mar 20, 2007, 07:43 PM
    Attach a scanner to the Data Link Connector and see what code is being thrown. Autozone will do this for free.
    nn4beatbox's Avatar
    nn4beatbox Posts: 2, Reputation: 1
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    #3

    Nov 2, 2010, 09:27 PM
    I have a similar problem - 2007 Honda Civic EX with an aftermarket cold air intake. CEL comes on with codes for DTC P0171 (fuel system too lean). I just bought the car used, and I am not the one who installed the intake. Honda said they won't do anything because it isn't stock, and they will only troubleshoot it if I install a stock intake and the light continues to come on (I don't have the original, nor do I feel like buying one). I've heard and read various things about how aftermarket intakes can throw off the MAF sensor. But I have also heard that it could just be a bad O2 sensor, dirty MAF sensor, or vacuum leak. The car doesn't seem to be running poorly, and I haven't even made it through a full tank of gas yet to determine my gas mileage. Could it be something with the computer? Any advice? Should I worry that my car is going to die prematurely? Appreciate the help!
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