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DME is the Digital Motor Electronics or ECU (Electronic Control Unit) that manages all aspects of engine control (ignition timing, fuel injection, oxygen sensor feedback, and numerous other functions). The DME can store faults that it detects and in some cases the DME will alert the owner of a serious fault by illuminating the Check Engine Light (CEL) on the dashboard.
A DME report is generated by using the proper test equipment to read out any engine faults that have been stored in the DME or ECU memory.
This is an important part of the pre-purchase inspection (PPI). Take a look at your PPI and it might have a section for engine faults or codes - that would be the DME report.
As long as your check engine light isn't on, then there really isn't any reason to check for engine problem codes unless you are curious or have some other reason to look into it.
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Last edited by thstone; 11-20-2012 at 08:12 PM.
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