DTC Troubleshooting

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, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

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

5. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

6. Check the FTP SENSOR in the DATA LIST with the HDS.

Is it between -0.67 and 0.67 kPa (-0.2 and 0.2 in.Hg, -5 and 5 mmHg), or 2.4 and 2.6 V?
YES - Go to step 7.

NO - Go to step 18.


7. Install the fuel fill cap.

8. Clear the DTC with the HDS.

9. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

10. Monitor the OBD STATUS for DTC P1454 in the DTCs MENU with the HDS.

Does the screen indicate FAILED?
YES - Go to step 11.

NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the FTP sensor, the EVAP canister vent shut valve, and the PCM. Also check for a blockage in the vent hoses and the drain joint. If the screen indicates NOT COMPLETED, keep idling until a result comes on.


11. Clear the DTC with the HDS.

12. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

13. Remove the EVAP canister vent shut valve from the EVAP canister. Service and Repair

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

15. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

16. Select EVAP CVS ON in the INSPECTION MENU with the HDS.

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

Does the valve operate?
YES - Check for a blockage in the EVAP canister, vent hoses, and the drain joint, then install the EVAP canister vent shut valve, and go to step 25.

NO - Replace the EVAP canister vent shut valve, Service and Repair then go to step 25.






18. With SH-AWD: Remove the trunk front trim panel, Interior Trim Removal/Installation - Trunk Area then remove the access panel from the floor. Service and Repair

19. Disconnect the air tube (A) from the FTP sensor (B).

20. Check the FTP SENSOR in the DATA LIST with the HDS.

Is it between -0.67 and 0.67 kPa (-0.2 and 0.2 in.Hg, -5 and 5 mmHg), or 2.4 and 2.6 V?
YES - Check for a blockage in the FTP sensor air tube or vent clear the blockage and reattach the air tube or vent, then go to step 25.

NO - Go to step 21.


Without SH-AWD





With SH-AWD





21. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

22. Remove the FTP sensor (A) from the EVAP canister with its connector connected. Service and Repair

23. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

24. Check the FTP SENSOR in the DATA LIST with the HDS.

Is it between -0.67 kPa and 0.67 kPa (-0.2 and 0.2 in.Hg, -5 and 5 mmHg), or 2.4 and 2.6 V?
YES - Check for debris or clogging at the EVAP canister and the FTP sensor port, then go to step 25.

NO - Replace the FTP sensor, Service and Repair then go to step 25.


Without SH-AWD





With SH-AWD





25. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

26. Reset the PCM with the HDS.

27. Do the PCM idle learn procedure. PCM Idle Learn Procedure

28. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P1454 and/or P2422 indicated?
YES - Check for poor connections or loose terminals at the FTP sensor, the EVAP canister vent shut valve, and the PCM, then go to step 1.

NO - Go to step 29.


29. Monitor the OBD STATUS for DTC P1454 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 28, go to the indicated DTC's troubleshooting.

NO - If the screen indicates FAILED, check for poor connections or loose terminals at the FTP sensor, the EVAP canister vent shut valve, and the PCM, then go to step 1. If the screen indicates NOT COMPLETED, keep idling until a result comes on.