Empowering Drivers A Guide to Understanding the P0446 Code

This generic OBD-II code indicates that the evaporative vent valve in the emission control system is malfunctioning. If the vent control circuit is throwing a code, the vent isnt opening to allow pressure release on fill up. Thus causing the fill neck to back ... Unlikely a bad charcoal canister but possible. P0446 would NOT set for a loose gas cap. A loose gas cap would set an EVAP Small Leak code while ... P0446 is for a partially or fully plugged evap system. Stuck closed vent valve, pinched line, plugged vent valve, etc. P0446: Evaporative Emission Vent System Performance help · Fuel tank sensor or its wiring · 5v reference circuit/wiring · Evap vent solenoid/wiring ... The code only means there is something wrong somewhere in the entire vent solenoid circuit, not necessarily with the vent solenoid itself. The P0446 error code signifies a problem with the evaporative emission control (EVAP) system's vent control circuit. P0446 is a vent valve contol circuit failure. If the electromagnet coil in the vent valve is burned out it'll appear to the ECM that the control circuit is ... CEL came on a week after removing my throttle body to clean it, code P0446. - No vacuum leaks - Verified evap canister vent valve is ... P0446 means the vent valve in the EVAP system is malfunctioning. Our expert mobile mechanics can diagnose and fix your P0446 trouble code wherever you are.