DTC P1454: FTP Sensor Circuit Range/Performance Problem

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .

DTC (PGM-FI)

• 1. 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. Remove the fuel fill cap.

  - 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:

  - 1. Install the fuel fill cap.

  - 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 in the DTCs MENU with the HDS.

  DTC Description	OBD STATUS
  P1454 FTP Sensor Circuit Range/Performance Problem

  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:

  - 1. Clear the DTC with the HDS.

  - 2. Turn the vehicle to the OFF (LOCK) mode.

  - 3. Remove the left middle floor undercover - Refer to: Middle Floor Undercover Removal and InstallationRear Floor Undercover Removal and InstallationFront Floor Undercover Removal and Installation .

  - 4. Disconnect the EVAP canister vent hose (A) from the EVAP canister (B).

  Courtesy of HONDA, U.S.A., INC.

  - 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 

  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:

  - 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.

  Courtesy of HONDA, U.S.A., INC.

  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 

  Replace the EVAP canister vent shut valve .

• 5. FTP sensor vent hose restriction check:

  - 1. Remove the left middle floor undercover - Refer to: Middle Floor Undercover Removal and InstallationRear Floor Undercover Removal and InstallationFront Floor Undercover Removal and Installation .

  - 2. Disconnect the vent hose (A) from the FTP sensor (B).

  Courtesy of HONDA, U.S.A., INC.

  - 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 

  Check for a blockage in the FTP sensor vent hose.

  NO 

  Go to step 6.

• 6. 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.

  Courtesy of HONDA, U.S.A., INC.

  - 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 

  Replace the FTP sensor .