Question about 2001 Jeep Grand Cherokee

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My 2001 grand jeep cherokee code sysyem is erased

I took my car for a diagnostic reading and a tune-up. The Tech said he could find any codes in the system. Why would the codes be erased and can I still get a good tune-up without the codes in the system?

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Codes tell you that there is a system failure. Unless you have a specific problem and see no codes, having no codes tell you that everything is working.

Posted on Jun 25, 2009

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hey year and 4.0L stated. wow
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1 Answer

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