DTC Troubleshooting: P2422
DTC P2422: EVAP Canister Vent Shut Valve Stuck Closed Malfunction
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P2422 EVAP Canister Vent Shut Valve Stuck Closed Malfunction
      

1.
EVAP system check:

EVAP system check
?1.
Press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Press the engine start/stop button to select the OFF mode.

?4.
Remove the fuel fill cap, and wait 1 minute.

?5.
Press the engine start/stop button to select the ON mode.

?6.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
FTP SENSOR
-0.67?0.67
kPa
    

Do the current condition(s) match the threshold?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Go to step 5.
2.
Problem verification:

Problem verification
?1.
Install the fuel fill cap.

?2.
Clear the DTC with the HDS.


?3.
Start the engine, and let it idle without load (A/T in P or N, M/T in neutral) until the radiator fan comes on.

?4.
Monitor the EVAP PC DUTY (purge control duty) in the DATA LIST with the HDS, while holding the engine speed at 3,000 rpm with the EVAP PC DUTY at 20 % or more for at least 4 minutes, then let the engine idle.
Signal
Current conditions
Values
Unit
EVAP PC DUTY
    

?5.
Monitor the OBD STATUS for DTC P2422 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P2422 EVAP Canister Vent Shut Valve Stuck Closed Malfunction
  

Does the HDS indicate FAILED?

     
YES
     
     
     
The failure is duplicated. Go to step 3.
     
NO
     
     
     
If the HDS indicates PASSED, there might be an intermittent failure, and the system is OK at this time. Check the on-board snapshot, and repeat the driving conditions when the DTC set (fuel level, engine speed, vehicle speed, and outside temperature). If no problem is found, check for poor connections or loose terminals between the FTP sensor and the PCM. Also check for a blockage in the FTP sensor vent port and vent hose, and the EVAP canister vent hose and drain joint. If the HDS indicates NOT COMPLETED, let the engine idle until a result comes on.
3.
EVAP canister vent line check:

EVAP canister vent line check
?1.
Clear the DTC with the HDS.


?2.
Press the engine start/stop button to select the OFF mode.

?3.
Disconnect the EVAP canister vent hose (A) from the EVAP canister (B).


?4.
Press the engine start/stop button to select the ON mode.

?5.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
FTP SENSOR
-0.67?0.67
kPa
    

Do the current condition(s) match the threshold?

     
YES
     
     
     
Check for a blockage in the EVAP canister vent hose or drain tube joint, then do the repair verification.
     
NO
     
     
     
Go to step 4.
4.
EVAP canister vent shut valve operation check:

EVAP canister vent shut valve operation check
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Remove the EVAP canister vent shut valve from the EVAP canister.

?3.
Connect the 2P connector to the EVAP canister vent shut valve.

?4.
Press the engine start/stop button to select the ON mode.

?5.
Select EVAP TEST in the INSPECTION MENU, then select the EVAP CVS ON in the SINGLE SOLENOID with the HDS.

  

?6.
Check the EVAP canister vent shut valve (A) operation.


Is the valve free of corrosion, and does it operate properly?

     
YES
     
     
     
The EVAP canister vent shut valve is OK. Go to step 5.
     
NO
     
     
     
5.
FTP sensor vent hose restriction check:

FTP sensor vent hose restriction check
?1.
Disconnect the vent hose (A) from the FTP sensor (B).


?2.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
FTP SENSOR
-0.67?0.67
kPa
    

Do the current condition(s) match the threshold?

     
YES
     
     
     
Check for a blockage in the FTP sensor vent hose, then do the repair verification.
     
NO
     
     
     
Go to step 6.
6.
FTP sensor port restriction check:

FTP sensor port restriction check
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Remove the FTP sensor (A) from the EVAP canister with its connector connected.


?3.
Check the parameter(s) below with the HDS.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
FTP SENSOR
-0.67?0.67
kPa
    

Do the current condition(s) match the threshold?

     
YES
     
     
     
The FTP sensor port is OK. The EVAP canister has an internal blockage; replace the EVAP canister, then do the repair verification.
     
NO
     
     
     
Repair verification (OBD STATUS check):

?1.
Press the engine start/stop button to select the OFF mode.

?2.
Install the parts in the reverse order of removal.

?3.
Press the engine start/stop button to select the ON mode.

?4.
Reset the PCM with the HDS.


?5.
Do the PCM idle learn procedure.

?6.
Monitor the OBD STATUS for DTC P2422 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P2422 EVAP Canister Vent Shut Valve Stuck Closed Malfunction
  


Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?

     
PASSED
     
     
     
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated, go to the indicated DTC's troubleshooting.?
     
FAILED
     
     
     
Go to step 1 and recheck.
     
NOT COMPLETED
     
     
     
Hold the engine speed at 3,000 rpm with the EVAP PC DUTY at 20% or more until a result comes on.