What is the OBD code for vent malfunction?
What is the OBD code for vent malfunction? P0446 OBD-II Trouble Code: Evaporative Emission Control System Vent Control Circuit Malfunction. Cost of diagnosing the P0446 code. P0446 is a diagnostic trouble code (DTC) for "Evaporative Emission Control System Vent Control Circuit Malfunction". What is the diagnostic code for evaporative emission control? Cost of diagnosing the P0449 code. P0449 is a diagnostic trouble code (DTC) for "Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. What is the...