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P0446 OBD-II Trouble Code: Evaporative Emission Control System Vent Control Circuit Malfunction
P0446 code definition 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. ...

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Engine light coming on
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...
I need to pass smog test.
Hello. When a vehicle sits for this long there can be a number of issues keeping it from starting and running right. You do need to replace the battery, and you should replace all of the fluids before starting it...
I need to pass smog test.
The code that you are getting is typically caused by an evaporative emissions vent valve that has failed. A mechanic would typically remove the valve and test it with an ohm meter and even apply voltage to it to see...
Getting various error codes
Sounds like you have several things going on. The first code P0220 is usually set because of a variance in voltage. This is sometimes due to a loose ground connection. A mechanic should be able to look up power and...
Restriction in the EVAP vent or purge hoses can also cause this code. A restricted EVAP canister will also set P0446. A smoke test can find restricted canister. I suggest having a mechanic come out and diagnose your Check Engine...
Had a P0446 code, now I have a P2405 code
Hi, thanks for writing in. The P2405 code is generated by the leak detection system which creates an artificial vacuum in your fuel supply system for a short period of time upon each engine startup sequence. If it is unable...
I think I was way overcharged for repairs.
Whether or not you were overcharged depends largely on what the labor rate is where you went. The cost per labor hour can be anywhere from $70 per hour in a small rural town shop to over $180 per hour...
Getting code P0446
The code P0446 is most likely due to an inoperative evaporative vent solenoid that will need replacement. The rear axle leak will need to be inspected to see where the leak is for a repair needed. If the rear cover...
Trouble Starting, and sometimes doesn't start at all - Dies at idle from time to time.
Hello. Cleaning the throttle body and idle valve may have been needed, but the intermittent starting and dying symptom can be the camshaft and crankshaft sensors. These are the codes P0335 and P0340. The code P0446 can be from the...
code p0446
Hi there. A P0446 (evaporative emissions system gross leak detected-Toyota defined meaning) sets when there is a fault detected in the evaporative system. The evaporative system is an emissions system responsible for preventing the leakage of fuel vapor into the...

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