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check engine light disappeared...

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Old Oct 22, 2010 | 06:57 PM
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jogger
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From: cincy-oh
02 S500
check engine light disappeared...
i had 2 codes last weekend (171 and 174, according to autozone maf and o2 sensor), and i wasn't able to it to the dealer. in the meantime i changed from e85 to premium and yesterday the engine light is gone. car is going to the dealer tomorrow; will the dealer know the codes were present? i dont want them to think i'm crazy.
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Old Oct 22, 2010 | 07:08 PM
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From: Boston, MA
'14 ML350, '13 C220 CDI, '07 C280, '98 ML320
Those codes may still be stored (possibly as 'pending' codes).
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5 speed transmission in "emergency mode" with "check engine" light on

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