Q: P0446 trouble code

asked by on

Evap P0446 trouble code

My car has 131 miles.
My car has an automatic transmission.

Hi there, thanks for writing in. This P0446 trouble code relates to the evaporation control system circuit, which is a restricted vent path for the EVAP (Emergency Vehicle Accident Prevention) system.

There is a solenoid in this circuit that sometimes can fail or get stuck not allowing the venting to work correctly which will trigger this code. In terms of fixing this, you will need to verify that there is power and ground to the solenoid. A scanning tool will be best to help you identify what specifically is going on. The vent solenoid is underneath the car above the rear axle area. There should be a black plastic canister which is the EVAP canister. The vent solenoid will be attached to that with a red two-wire connector that attaches to it.

Keep in mind that replacing this may not necessarily clear the code right away, as the EVAP system can take some time to run tests through the computer. If you’d like help with this, consider having one of our certified automotive technicians from YourMechanic come to your home or office to inspect, diagnose, and repair this issue for you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. P0446 trouble code

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My Chevy Malibu 2013 while driving and I came to a complete stop in the car started to shake really bad and then shut off and then

Sudden loss of engine power, and then a non-functioning starter, raises the possibility of no oil in the engine. In particular, if the engine was seized, the starter would not work in any attempt to re-start the engine. But there...

Q: Engine is overheating and heater has stopped working

If the engine was replaced and the AC refrigerant system was drained then the system should be put under a vacuum for a minimum of 30 minutes to ensure all moisture is boiled out and then leak tested to ensure...

Q: Downsizing tires.

What is important to note when comparing tire sizes is what each of the numbers stands for. The first number denotes the width of the tire. The second number is what is known as the aspect ratio, which denotes the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...