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Old 08-02-2006, 03:22 AM
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vinuneuro vinuneuro is offline
Join Date: Apr 2005
Location: MI/IL/IN
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All codes can be read from the OBII port and most are emissions related, but there are proprietary systems in more advanced engines that also use the CEL to output codes for failure of those secondary intake butterfly components, vtaack of course , etc.
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