2000 Toyota Corolla Emission control system malfuntion

Tiny
FMARG
  • MEMBER
  • 2000 TOYOTA COROLLA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 112,000 MILES
What could be the cause of a code P0440? I connected a reader to the car and have only one code that came up (P0440). Thanks
Thursday, January 7th, 2010 AT 1:28 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
It is an error code in the EVAP system. This purges gas fumes back to intake for emmissions purposes.
This is a closed system.

Sometimes caused by a loose gas cap, but can also be caused by a purge solenoid, leak in system etc.

Have system scanned by dealer or trusted garage, then can test all solenoids and purge valves to isolate problem.
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Friday, January 8th, 2010 AT 7:59 AM

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