1997 BMW 740 OBD Code Po446 - Evaporative Emission Control

1997 BMW 740
14,000 MILES • V8 • 2WD • AUTOMATIC
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CHUCKSCIFERS
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How do I fix it?


Chuck
Jul 23, 2008 at 5:40 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
The purge valve is in need of replacement. Also called the tank vent valve, it is under hood and is easily located and replaced, located in plain view at the left front area of the engine bay. If the production date is before 9/97 the part# 13-90-1-744-150 is what you seek. Most OBDII resetting devices will reset your check engine light.
Jul 27, 2008 at 10:57 PM
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