Question about 2001 Chevrolet Cavalier

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Data Link Hi, I own a 2001, 4 cyl. Chevy Cavalier. 50,000 miles.Two days ago, my check engine light came on. The following day it went off. My neighbor is a mechanic, so I asked him to put his code scanner on it just to see if anything would come up. After he connected it to the data link, there was no read out at all. In fact the scanner wouldn't even register.Thinking maybe his scanner was faulty, he tested it on a few other vehicles on our block. It worked perfectly on those. My car runs great - So my question is: Would someone have any opinions as to why the code scanner wouldn't have any read-out with my vehicle? Thank you, Stephen Hall s.vzesteve3@verizon.net

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  • shale49 Sep 11, 2008

    Thanks very much! Your suggestions and advice were very helpful. I will keep you posted! Thank you again!

    With best wishes,

    Steve...

  • jamesusa2 Feb 28, 2009

    hi i have a explorer 02 the engine light is on but no link to scanner what's wrong?

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The no connect fault indicates that you have a ecm issue, however the check engine light will come on if your fluids are low(coolant,oil) if your vehicle was driving fine except for the light coming on chances are there will be no codes and i would check the fluids. Incidently not all code scanners work the same way on all vehicles. On mine which is the kind all major dealerships use you have to have key cards that send a certain signal through the data link. this card is mad for a ceratin kind of vehicle. This could be the reason your friends scanner did not work on the vehicle. keep me posted with the result of the fluid check. I would also check the connection of the oil sending unit and or the coolant temp sensor lead this will cause the light to come on as well. please rate this... thanks

Posted on Sep 11, 2008

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