How do you clear a P0446?
Gas caps are relatively inexpensive and are often the fix for code P0446. If the fuel cap didn’t fix it, perform an EVAP system leak check: Pinch off the vent tube to the EVAP Vent Control Valve. Pressurize the EVAP system with an EVAP smoke machine leak checker.
What causes P0446 code?
Code P0446 indicates that there is an improper voltage drop in the EVAP Vent Valve circuit, which can be caused by either too little or too much electrical resistance. This improper electrical condition will cause the vent valve to malfunction.
Where is the EVAP system located?
On most domestic and foreign vehicles sold in the US, the EVAP emissions canister is located next to the fuel cell. It is shaped in a rectangular or spherical design and has three vapor lines attached to it. One line attaches to the fuel cell, one to the EVAP purge solenoid and one to the EVAP vent solenoid.
What are the symptoms of a bad EVAP canister?
3 Signs Of A Failing Canister Purge Valve
- Check Engine Light Is On. The first sign of trouble for your canister purge valve is the check engine light.
- Lower Gas Mileage. If your canister purge valve is not opening properly, it may adversely impact your gas mileage.
- Engine Problems.
What does the code p0446 mean on a Toyota 4Runner?
P0446 is a universal OBDII trouble code. This means that regardless of which make or model of vehicle, the code will mean the same thing (4Runner or not). The code technically stands for: The EVAP system captures all fuel vapor from the fuel tank and sends them to the engines intake in order to be ignited in the normal combustion process.
What is the trouble code on a Toyota 4Runner?
A very common trouble code with the Toyota 4Runner is the P0446 code. This trouble code references a number that is given to you when you plug your 4Runner into a OBDII scanner. P0446 Indicates that there is a fault in the evaporative emission control system.
How much does it cost to diagnose p0446 Toyota code?
The cost of diagnosing the P0446 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 P0446 TOYOTA code detected?
What causes the p0446 code on a Chevy Blazer?
Vapor Canister Purge Valve – One of the most common causes of the P0446 code is the vapor canister purge valve. It’s really easy to replace. There are a few clips that you need to find and remove. EVAP System Hose – The hose that carries the fuel vapor from the fuel tank to the intake manifold can begin to leak. This will cause the P0446 code.