What Is A CCV Vent And Where Is It Located? - 1999 Toyota Camry

Remove the 4 screws securing the acoustic cover (1) to the engine. Remove towards the front.
Remove the trim covers from both valve covers to expose the crankcase vent valves (1). Using a pick, release the six clips securing the vent valve.

The canister close valve stays open until commanded to close by the ECM. You must either smoke it whil energizing the solenoid with scanner or apply 12v to the 2 pins. Most evap failures lead to a bad ccv. The reason the smoke is coming from your frame is because the dump pipe from the canister close is run there to keep debris from plugging ot

you should check the wires and the plug on thje ccv vent control solenoid, if they look good replace the solenoid, get the catalytic converter checked at a shop, a clogged cat can cause some of the other codes.

First time remove the engine cover



Then you will see the engine


A - Airflow ducting
B - Integrated EGR/ASV valve
C - Crankcase vent tube (CCV)
D - Timing Belt cover
E - VNT actuator - part of turbocharger
F - Engine Oil Fill cap
G -Turbocharger control unit
H - Alternator
I - N75 / turbocharger boost pressure control valve
J - Mass Air Meter
K - Fuel Filter
L - Power steering fluid reservoir
M - Screen Washer Fluid
N - Coolant Expansion Tank
O - ABS stuff
P - Ducting to Intercooler
Q - part of CCV piping connector
R - N75 / Turbo Pressure Control solenoid
S - vacuum reservoir ball
T - FLex couplling for Exhaust system
U - Hot side of Turbo: flex pipe
V - Air throttle actuator
W - Pipe for EGR


Yellow arrow shows the turbocharger

The VW serial number is located on the front of the turbocharger

The code you cite, P0447 - Evap. Emission Ctrl. System - Vent Circuit Open
This vent circuit is call the CCV (Canister Close Valve). This valve normally stays 'OPEN' to allow outside air flow through the charcoal canister, which absorbs fuel vapors when you put gas in the tank, then the engine vacuum pulls air through it to recollect the fuel vapors and burn them in the cylinder combustion process.

There is a two-pin connector connector plugged into/connected to the CCV. Perhaps it somehow disconnected itself or some foreign object damage the wire harness breaking the connection (circuit 'open' condition), which would set this code. Another possibility is the CCV coil (Solenoid) has an open coil/contacts in it. Regardless, before you start throwing money after parts, have it properly diagnosed first. The problem may simply be a loose/oxidized connection/contact between the CCV and the ECU.

Hope this helps.

this is canister control valve for the evap system the repair is replacement and then clearing the code its location is on the back of the airfilter container one plug and a hose and your done good luck and please rate this

evap vent valve if you have a scanner with function test go to evap vent valve turn it on and off should hear a clicking noise

The evaporative emissions system prevents hydrocarbon (HC) vapors from the fuel tank from escaping into the atmosphere where they could form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Canister Closing Valve (CCV) closes off the air inlet into the canister for leak detection of the evaporative emission system. The CCV also prevents fuel vapors from escaping from the canister. When the engine purges the HC vapors from the canister, the clean air comes into the canister through the canister air-filter and the CCV.

1. Ignition "OFF". 2. Disconnect CCV connector. 3. Measure resistance between terminals 1 and 2 of the CCV connector(Component side). Specification : Approx. 23~26Ω at 20°C(68°F)
4. Is resistance within the specification? YES ▶ Go to next step as below. NO ▶ Check CCV for contamination, deterioration, or damage. Substitute with a known-good CCV and check for proper operation. If the problem is corrected, replace CCV and then go to "Verification of Vehicle Repair" procedure.Terminal and Connector Inspection

Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

P0446 is an evap code. Most likely, you need to change the charcoal canister vent valve (CCV) under the trunk floor. Fuel cap codes set 3 codes at once, P0440. P0441 and P0446, all at the same time.

Hi have a nice day!
Check EVAP Emission Control System Vent Circuit.

DESCRIPTION The evaporative system prevents hydrocarbon (HC) vapors from the fuel tank escaping into the atmosphere where they would form photochemical smog. Gasoline vapors are collected in the charcoal canister. The Canister Close Valve (CCV) closes off the air inlet to the canister for leak detection of the evaporative emission system. The CCV also prevents fuel vapors from escaping from the canister. When the engine purges HC vapors from canister, the clean air comes into the canister through canister air-filter and CCV. If open error message displayed is "P0447" If shorted error message is "P0448"