Quote:
Originally Posted by FromG2Z
Sorry to interject... but I've always wondered about this. When you say, "codes thrown", what exactly do you guys mean? Do you mean the patterned flashing of the CEL? If so, how do you know what the pattern means just by looking at it? Don't you need a device of some sort to interpret it?
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There is no flash pattern on the CEL unless you put the car into that mode, it is normally either CEL on steady for less serious problems or CEL flashing for a more serious issue.
A $50 code reader gives you the "code" for an CEL, better ones also give a code description and can let you clear the code rather than waiting for the computer to clear it automatically (for transient issues).