What is evaporative emission vent control circuit?
OBD-II Code P0446 is defined as a Evaporative System Vent Control Circuit Malfunction. The evaporative control (EVAP) system captures any raw fuel evaporating from the fuel storage system (e.g. the fuel tank, filler neck, and fuel cap).
What is fault code P0446?
P0446: Evaporative Emission Control System Vent Control Circuit. This generic OBD-II code indicates that the evaporative vent valve in the emission control system is malfunctioning. When this occurs, the EVAP system may not be capable of pressurizing and maintaining a vacuum seal.
What is emission control system malfunction?
The error code P0440 is associated with an evaporative emission control system malfunction. It indicates that there is a part of the EVAP control system not functioning as it should. The EVAP system is comprised of different parts which include the gas cap, carbon canister, fuel lines, purge valve or any other hoses.
Is it safe to drive with a code p0446?
It often appears with other codes, such as P0420, P0441, or P0440. P0446 is normally not an immediate threat to the drive-ability of your vehicle. Certainly anytime the service engine soon light is on, it’s good to deal with it as soon as possible though. It is often accompanied by P0442.
What does p0446 code mean?
P0446 is a diagnostic trouble code (DTC) for “Evaporative Emission Control System Vent Control Circuit Malfunction”.
What does a diagnostic trouble code p0446 mean?
P0446 is an OBD2 diagnostic trouble code that indicates a fault within the evaporative emission control system. Other EVAP system codes may be seen with P0446.
How much does it cost to repair an EVAP system?
According to SmogTest.com, the average cost to repair an EVAP system that failed the EVAP test is $250. A diagnostic smoke test, according to British Columbia-based Jericho Electronics, costs $89.99 at some shops. The price does not include repair.