What causes P0441 code?
However, when check engine light code P0441 is set, the purge valve is not properly regulating the flow of the fuel vapors by allowing too much flow or too little flow.
What code is P0455?
P0455 is a fairly straight forward OBD-II trouble code, in that it tells us that the engine computer has detected a large leak in the engine Evaporative Emissions Control (EVAP) system. The EVAP system prevents fuel vapors from escaping into the atmosphere.
What causes P0446?
Code P0446 indicates that there is an improper voltage drop in the EVAP Vent Valve circuit, which can be caused by either too little or too much electrical resistance. This improper electrical condition will cause the vent valve to malfunction.
Can you bypass a purge valve?
EVAP Purge valve not only allows to purge the gasoline vapors stored in the charcoal canister but also ensures smooth vehicle performance during all driving conditions while purging under predefined operating conditions. So it will not be wise to bypass evap purge valve from the evap emission control system.