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Old 09-21-2009, 07:50 PM
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slk230red slk230red is offline
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Join Date: Jul 2006
Location: Tampa, FL
Posts: 820
Quote:
Originally Posted by DavidBunin View Post
Driving down the road, no symptoms, nothing wrong. The Check Engine light comes on. I take it to a local parts store and they read out code P0170. A local shop wants $100 just for a diagnostic, I haven't even asked the dealer yet.

The car runs fine, but I'm due for the state inspection this month and I can't pass with that light on.

Any likely causes for a "fuel trim" fault without any driveability problems?

David Bunin
You can replace the MAF with new one, or go to NAPA and purchase some MAF cleaner and try it. I had the same problem on my '01 SLK230 a couple of years ago and cleaning it worked. No more CEL. Next time I might have to purchase a new MAF.

And yes....let the search feature be your friend.
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1993 190E 2.3
2001 SLK230
1971 LS5 (454) Corvette Convertible
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