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How you fix Toyota Echo code 0440?

Updated: 10/20/2022
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14y ago

Best Answer
  • Remove and reinstall the gas cap, clear the code, and drive for a day and see if the codes come back.
  • Inspect the EVAP system for cuts/holes in tubes/hoses
  • Inspect for damaged or disconnected hoses around the Evap purge solenoid
  • Check and/or replace the sensor
  • Check and/or replace the purge valve
  • Have a professional use a smoke machine to detect leaks

Usually it comes up because someone didn't close the gas cap tightly (3-clicks!) and its not a big deal. Worst case you might have to replace the canister which is expensive. Sometimes a hose gets accidentally disconnected (or not reconnected) when someone does a sloppy air filter change. In that case, just reattached the hose and you should be good to go.

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14y ago
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