DTC P1458

DTC P1458  : FTP Sensor Circuit Range/Performance Problem

DTC (PGM-FI)

1. Fuel level check

   -1. Turn the vehicle to the ON mode.

   -2. Note these recorded on-board snapshot parameters with the HDS:

   • MAX Value of FTP SENSOR
   • MIN Value of FTP SENSOR
   • FUEL LEVEL

   On-board Snapshot

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

   -3. Check the FUEL LEVEL in the DATA LIST with the HDS.

   Signal	Current conditions
   	Values	Unit
   FUEL LEVEL

   Is the current FUEL LEVEL less than it is on the on-board snapshot?

   YES 

   Go to step 2.

   NO 

   Drain the fuel until the FUEL LEVEL is less than it is on the on-board snapshot, then go to step 2.

2. Determine possible failure area (FTP sensor, others)

   -1. Select the EVAP CVS OFF in the SINGLE SOLENOID with the HDS.

   SINGLE SOLENOID

   Take a snapshot with the HDS for 3 minutes without starting the engine.

   -3. Check the recorded snapshot parameter with the HDS:

   • MAX Value of FTP SENSOR (FINE)
   • MIN Value of FTP SENSOR (FINE)

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

   Are the MAX and MIN values of the FTP SENSOR (FINE) within the range of +/-0.67 kPa (0.2 inHg, 5 mmHg)?

   YES 

   Go to step 3.

   NO 

   Go to step 5.

3. FTP sensor performance check 1

   -1. Check the FTP SENSOR (FINE) in the recorded snapshot with the HDS.

   Does it vary 0.067 kPa (0.02 inHg, 0.5 mmHg) or more within 3 seconds?

   YES 

   Go to step 4.

   NO 

   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 EVAP vent hose.

4. FTP sensor performance check 2

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Remove the FTP sensor .

   -3. Reconnect the following connector.

   FTP sensor 3P connector

   -4. Turn the vehicle to the ON mode.

   -5. Check the parameter(s) below with the HDS.

   Signal	Current conditions
   	Values	Unit
   FTP SENSOR (FINE)

   Does it vary 0.067 kPa (0.02 inHg, 0.5 mmHg) or more within 3 seconds?

   YES 

   Replace the FTP sensor , then do the repair verification.

   NO 

   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 EVAP vent hose.

5. Determine possible failure area (EVAP canister vent line, others)

   -1. Insert the emergency fuel funnel into the fuel filler neck , and wait 1 minute.

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

   -2. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   FTP SENSOR (FINE)	More than 0.67	kPa
   	Less than -0.67	kPa

   Do the current condition(s) match the threshold?

   YES 

   Go to step 6.

   NO 

   Remove the emergency fuel funnel from the fuel filler neck, then go to step 8.

6. FTP sensor vent hose check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Remove the FTP sensor .

   -3. Reconnect the following connector.

   FTP sensor 3P connector

   -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 (FINE)	More than 0.67	kPa
   	Less than -0.67	kPa

   Do the current condition(s) match the threshold?

   YES 

   Go to step 7.

   NO 

   Remove the blockage in the FTP sensor vent hose. Replace the hose if needed, then do the repair verification.

7. FTP sensor port visual check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connector.

   FTP sensor 3P connector

   -3. Check for a blockage or damage at the FTP sensor ports (EVAP canister side and vent side).

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

   Is there any blockage or damage?

   YES 

   Remove the blockage, and replace the FTP sensor if needed, then do the repair verification.

   NO 

   Replace the FTP sensor , then do the repair verification.

8. EVAP canister vent shut valve check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the fresh air hose (A) from the EVAP canister (B), then connect a vacuum pump/gauge to the EVAP canister as shown.

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

   -3. Turn the vehicle to the ON mode.

   -4. Select the EVAP CVS OFF in the SINGLE SOLENOID with the HDS.

   SINGLE SOLENOID

   Try to apply vacuum to the valve (not more than 5.3 kPa (1.6 inHg, 40 mmHg)) while checking the FTP SENSOR (FINE) in the DATA LIST with the HDS.

   NOTE: To avoid damaging the FTP sensor, do not apply more than 5.3 kPa (1.6 inHg, 40 mmHg) of vacuum.

   Signal	Current conditions
   	Values	Unit
   FTP SENSOR (FINE)

   Does the valve hold more than 1.3 kPa (0.4 inHg, 10 mmHg) of vacuum?

   YES 

   Replace the EVAP canister vent shut valve , then do the repair verification.

   NO 

   The EVAP canister vent shut valve is OK. Remove the blockage in the fresh air hose. Replace the hose if needed, then do the repair verification.

9. Repair verification

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Reconnect all connectors and the fresh air hose.

   -3. Turn the vehicle to the ON mode.

   -4. Reset the PCM with the HDS .

   Reset PCM

   -5. Do the PCM idle learn procedure .

   -6. Take a snapshot with the HDS for 3 minutes without starting the engine.

   -7. Check the recorded snapshot parameter with the HDS:

   • MAX Value of FTP SENSOR (FINE)
   • MIN Value of FTP SENSOR (FINE)

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

   Is the MAX value of the FTP SENSOR (FINE) +/-0.67 kPa (0.2 inHg, 5 mmHg) or less, and is the MIN value of the FTP SENSOR (FINE) +/-0.67 kPa (0.2 inHg, 5 mmHg) or less?

   YES 

   Troubleshooting is complete.

   NO 

   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.