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Ethanol Sensor Error.


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Hey all, Im having a weird issue where on cold first start up, after a few days or a week of sitting. The car pops on a check engine light for ethanol content sensor fault/error. The sensor seems to work fine with no issues so i wanted to ask if anyone else has experienced something similar. Let me know thanks.

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8 hours ago, Floor It Garage said:

Take a log with Flex sensor frequency and battery voltage on one of those cold start's and see what it is.

0% ethanol is 50hz from the sensor, I suspect its dropping out and the ECU is catching that

Hey thanks. I will give that a try and see what info I get. Appreciate it. 

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