What does diagnostic code P0446 mean?
evaporative vent valve
Share. Tweet. Trouble code P0446 typically turns up in On-Board Diagnostic testing on account of an illuminated Check Engine Malfunction Indicator Lamp. This generic OBD-II code indicates that the evaporative vent valve in the emission control system is malfunctioning.
How do you trigger an EVAP test?
Start the engine and idle for four minutes, then drive in stop-and-go traffic for five minutes using smooth accelerations and decelerations. Stop and idle for 4 minutes. The EVAP monitor should be complete.
What does the trouble code p0441 stand for?
P0441 is a generic powertrain diagnostic trouble code. It may be thrown by any OBD-II equipped vehicle. It indicated that the EVAP control system is not functioning correctly. The EVAP system is an emissions control system intended to prevent fuel vapors from escaping.
What does the code p0446 mean on a car?
The code P0446 is triggered by the engine computer (ECU) when there’s a malfunction in the EVAP control system vent control valve. How does the EVAP system vent control work? The Evaporative (EVAP) Emission Control System is one of the methods your engine uses to limit its harmful emissions.
How much does it cost to diagnose p0441 Toyota code?
The cost of diagnosing the P0441 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour. When is the P0441 TOYOTA code detected?
What does p0446 do to the EVAP system?
During the leak test, the ECM closes the vent control valve to create a sealed EVAP system. When P0446 is triggered, the ECM has detected a short in the circuitry to activate the vent control valve, or the EVAP system failed to maintain the proper pressure during the active EVAP leak test. What Are The Symptoms Of P0446?