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Old 2012-09-06, 08:33 AM   #2
Nick Koan
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Real Name: Nick
Join Date: Oct 2003
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Car: 2015 Mazda 3
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It could be a temporary issue. The code will still be available, even though the CEL has cleared itself. If you get an OBDII scanner you can read/clear it.

It could be a number of things, from bad gas to a failing O2 sensor, etc. Some codes could be harmless, some could actually mean something needs to get fixed in the near future.

The good(-ish) news, though, is that the car is clearing the CEL because this is not a consistent problem right now.
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