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P0440 code when fuel level low?

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Old Jan 13, 2016 | 03:46 PM
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Default P0440 code when fuel level low?
Is this an easy fix?


Have been noticing that when my fuel level gets below 1/4 tank, I get SES light and its the P0440 code...






why is that?
 
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Old Jan 13, 2016 | 08:49 PM
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The EVAP monitor will not run if the fuel level is below 15%, or above 85%. There's a whole list of stuff that can cause P0440 to set. Here is a link to the flow chart: https://blazerforum.com/forum/diagno...plained-35145/
 
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