DTC P1454: FTP Sensor Circuit Range/Performance Problem (L4)

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems (L4) .

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. Insert the emergency fuel funnel into the fuel filler neck.

   NOTE:  The emergency fuel funnel is stored in the trunk tool box.

   - 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. 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 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 rear subframe undercover.

   - 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.

   SINGLE SOLENOID

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

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

   - 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

   -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 - Refer to: EVAP Canister Removal and Installation (Without SH-AWD, KA/KC) .

   NO 

   Replace the FTP sensor - Refer to: FTP Sensor Removal and Installation (Without SH-AWD, KA/KC) .