DTC Troubleshooting: P1454, P2422
DTC P1454: FTP Sensor Circuit Range/Performance Problem
DTC P2422: EVAP Canister Vent Shut Valve Stuck Closed Malfunction
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P1454 FTP Sensor Circuit Range/Performance Problem
    
P2422 EVAP Canister Vent Shut Valve Stuck Closed Malfunction
    

1.
EVAP system check:

EVAP system check
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode.

?4.
Insert the emergency fuel funnel into the fuel filler neck.
NOTE: The emergency fuel funnel is stored under the cargo lining.

?5.
Turn the vehicle to 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.
Remove the emergency fuel funnel from the fuel filler neck.

?2.
Clear the DTC with the HDS.


?3.
Start the engine, and let it idle without load (in P or N) 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 P1454 and/or P2422 in the DTCs MENU with the HDS.
DTC Description
OBD STATUS
P1454 FTP Sensor Circuit Range/Performance Problem
  
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 air 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.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Clear the DTC with the HDS.


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


?4.
Turn the vehicle to 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.?
     
NO
     
     
     
Go to step 4.
4.
EVAP canister vent shut valve operation check:

EVAP canister vent shut valve operation check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Remove the EVAP canister vent shut valve.

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

?4.
Turn the vehicle to the ON mode.

?5.
Select the EVAP TEST in the INSPECTION MENU, and do 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 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.?
     
NO
     
     
     
Go to step 6.
6.
FTP sensor port restriction check:

FTP sensor port restriction check
?1.
Turn the vehicle to the OFF (LOCK) mode.

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


?3.
Turn the vehicle to the ON mode.

?4.
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.?
     
NO