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Amedee
Amedee, Former ASE Master Tech
Category: Car
Satisfied Customers: 25853
Experience:  ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
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2002 Kia Sedona: 3.5L..petrol..error code P0446, having to do..evap

Customer Question

2002 Kia Sedona 3.5L petrol, need to find repair info for error code P0446, having to do with evap emmisions system. Possible short. THX
Submitted: 7 years ago.
Category: Car
Expert:  Amedee replied 7 years ago.

Hello!

 

Trouble code P0446. Evaporative Emission Control System (EVAP), vent control malfunction.
Tests/Procedures: 1. Locate the canister closed valve under the vehicle and verify that it is not stuck closed. Also verify that the vent and filter are not restricted. If necessary, backprobe and ground the canister closed valve and verify that when the ground is taken away, the valve does not stick closed.

2. If the canister closed valve works correctly, verify that the charcoal canister is not restricted or fuel-saturated. Refer to Kia TSB under fuel #004 and Kia TSB under fuel #006 for updated line and component information.
Potential Causes: Canister - Fuel saturated canister.
Canister Closed Valve
Restricted Canister Closed Valve Filter
Restricted Charcoal Canister

P0446 EVAP Vent Control Solenoid Circuit Performance (Closed)

Possible Causes
Vent solenoid connector is damaged (check pins for damage, and moisture)
Vent solenoid control circuit is shorted to ground
Vent solenoid power (12v) circuit is open (check power circuit from main relay)
Vent control solenoid has failed
PCM has failed

Amedee and 8 other Car Specialists are ready to help you
Customer: replied 7 years ago.
where is the "Vent solenoid connector" located in relation to Charcoal Cannister?
Expert:  Amedee replied 7 years ago.
IT is going to be located on or near the charcaol canister.