Question

I got the engine code P0440 on my 2001 Toyota 4Runner V6, how can I fix the code? Light OFF then back ON

Answer 1

P0440 Evaporative emission control system malfunction

When the CK ENG LT comes on the VSC and ABS system are disabled, the manufacturer does this for safety reasons, being that the vehicle is no longer operating at manufacturer specifications.  Checking the basics would be the best approach such as the fuel cap,

 

The first and best approach for dealing with an EVAP code is to check and inspect the fuel cap, here this seal is worn this set a P0440.

Answer 2

P0440 TOYOTA Code - Evaporative Emission Control System Malfunction
Read more: https://www.autocodes.com/p0440_toyota.html