bitter sweet...
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Are the ARC Filter elements Oil based?? (not sure)
If they were recently cleaned & re-oiled, their might be an issue with over oiling.
Oil vapor that collects on the MAF sensor can easily cause a CEL.
This was a common issue that occured on the IS300's, with oil based filters...
If that's the case, you can remove the MAF sensor and carefully clean it with
![](http://ecx.images-amazon.com/images/I/411CvV4yAwL._SL500_AA280_.jpg)
Good Luck
Joe Z
If they were recently cleaned & re-oiled, their might be an issue with over oiling.
Oil vapor that collects on the MAF sensor can easily cause a CEL.
This was a common issue that occured on the IS300's, with oil based filters...
If that's the case, you can remove the MAF sensor and carefully clean it with
![](http://ecx.images-amazon.com/images/I/411CvV4yAwL._SL500_AA280_.jpg)
Good Luck
Joe Z
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