The diagnostic trouble code P0441 is the Evaporative Emission Control System Incorrect Purge Flow. This post will tell you the meaning, what causes the P0441 and how to fix it
The diagnostic trouble code P0440 is defined as Evaporative Emission Control System Malfunction. This post will tell you the meaning, what causes the P0440 and how to fix the problem.
The diagnostic trouble code P0442 is related to the Evaporative (EVAP) Emission Control System. This post will tell you the meaning, what causes the P0442 and how to fix the problem.