A fuel vapor pressure management apparatus for an internal combustion engine includes a housing, a pressure operable device, and a printed circuit board. The pressure operable device moves between first and second configurations with respect to the housing. The printed circuit board is supported by the housing and includes a delay and a sensor. The delay commences upon internal combustion engine shutdown and concludes after a preset period. And the sensor indicates movement of the pressure operable device in the first configuration after the conclusion of the preset period.

 
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