Q: Engine light coming on
The Engine light is on. The diagnostic said it was an EVAP issue, error code P0446.
Recommended Services
| Check Engine Light is on Inspection | $94.99 - $114.99 | Get a Quote |
Hello. Code P0446 comes up due to a problem with the EVAP emissions vent system. This system collects evaporating fuel so that it does not get released into the atmosphere. The code almost always means that the vent valve has failed. A mechanic would remove this valve and test it to see if it is functioning. If it functions with power applied to it, then it may be a circuit problem, but that is not as common. The best way to diagnose it is with a scan tool that allows you to cycle the vent valve to check its function. A certified mechanic, like one from YourMechanic, can inspect the engine codes present in the computer and diagnose what is causing the problem.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
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
What others are asking
What does the Replace Battery in Remote Key message mean?
The Replace Battery in Remote Key message appears on your driver information center (DIC) when the batter in the remote keyless entry (RKE) transmitter needs to be replaced. When a new battery is added to the RKE, the DIC alert...
Car vibrates while idling
The crankshaft damper has been known to cause an engine vibration, due to it separating and getting out of balance, causing the engine to vibrate. If this is the case, it may need to be replaced. I recommend having a...
Intermittent cylinder misfiring on a '98 Grand Marquis
What you should do, if you don't have the equipment and you don't understand it is to call a professional to take a look into your misfiring problem (https://www.yourmechanic.com/services/engine-is-misfiring-inspection) for you. Mechanics, like those from YourMechanic and myself, we've been...
Vibrations in front wheels
Hello. It will help to know what services you had done because your recent service could be related to your new problem. It sounds like it could be due to the tires being out of balance, low on air pressure...
Truck bogs out under load
First, the EGR tube rusted away will cause excessive air to get into the exhaust and cause the O2 sensors to read erratic. The main reason you most likely have a mass air sensor that is not reading correctly for...
My 3rd brake light still works but not lower lights, cruise will not set.
The brake lights in the back are all powered by the same wire as the third brake light is. You have to check the brake light bulb (https://www.yourmechanic.com/services/brake-light-bulb-replacement) in the back on each side and make sure they are good....
Transmission selector shaft seal leakage. Does it need to be fixed and how expensive is the repair?
If you are referring to the "manual shaft" seal pressed into a bore on the transmission case, which seal is typically around an inch in diameter, it is repairable (replaceable) on the car if there is physical access to the...
ticking only when in gear and i press accelerator
Hello, thank you for writing in. The ticking noise can be engine or exhaust related. Typically the transmission makes different types of noises when there is something wrong, so keep the transmission as being one of the last components you...
My 2012 Toyota Corolla blows all over the road in the wind. What causes this? Is the car not heavy enough or is it not aerodynam
All vehicles, regardless of their weight and aerodynamics, are buffeted by high winds. If the vehicle does not have directional stability, it may have an alignment problem or an issue with the tires and/or suspension. If you want your vehicle's...
Related articles
Symptoms of a Bad or Failing Exhaust Gas Recirculation (EGR) Valve
Common signs include engine performance issues like decreased power and acceleration, rough idle, and the Check Engine Light coming on.
P0224 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
P0224 P0224 Code Definition Throttle/pedal position sensor/switch B circuit intermittent is the technical definition of this trouble code. What the P0224 code means The P0224 code means that the powertrain control module (PCM) is detecting intermittent voltage readings from the...
P2729 OBD-II Trouble Code: Pressure Control Solenoid E Control Circuit Low
P2729 means a solenoid has malfunctioned due to a failing transmission, faulty sensors or solenoids, low fluid levels or electrical issues
Browse other content
Maintenance
Services