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Old 02-24-2020, 10:26 AM   #1
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EVAP BMW code 250 (aka P0440 or Peake FA)

Hi, I have a 2000 323Ci showing BMW code 250 (aka P0440 or Peake FA). It is defined as an EVAP system ďpurge valve functional checkĒ. Iím assuming this means Iím not getting enough purge flow through the system for the ECM to recognize the EVAP system is working properly. Iím getting no other codes. Occasionally Iíll find a vacuum (or maybe pressure?) in my gas tank when I remove the cap. LTFT=0, STFT=~2. Anyone successfully solved this?
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Old 02-24-2020, 03:25 PM   #2
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P0440: Evaporative Emission Control System Malfunction

Most common problem is a bad evap purge valve.
You can remove it and test it with a 12V power supply and vacuum pump with gauge.

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