DTC P0450

DTC P0450  : FTP Sensor Out of Range

DTC (PGM-FI)

1. EVAP system check 1

   -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. Turn the vehicle to the ON mode.

   -5. Operate the fuel fill door opener switch to open the fuel fill door.

   -6. Turn the vehicle to the OFF (LOCK) mode.

   -7. Remove the fuel fill cap to relieve the pressure in the fuel tank.

   -8. Turn the vehicle to the ON mode.

   -9. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   FTP Sensor Voltage	Less than 0.91	V

   Data List

   Do the current condition(s) match the malfunction threshold?

   YES 

   Go to step 3.

   NO 

   Go to step 2.

2. EVAP system check 2

   -1. Check the parameter(s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   FTP Sensor Voltage	More than 4.48	V

   Data List

   Do the current condition(s) match the malfunction threshold?

   YES 

   Go to step 7.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at FTP sensor and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

3. Determine possible failure area (P/SNSR2 OUT line, others)

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

   -2. Disconnect the following connector.

   FTP sensor 3P connector

   -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 Voltage	Less than 0.91	V

   Data List

   Do the current condition(s) match the malfunction threshold?

   YES 

   Go to step 4.

   NO 

   Go to step 5.

4. Shorted wire check (P/SNSR2 OUT line)

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

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector A (50P)

   -4. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	FTP sensor 3P connector: disconnected
   	PCM connector A (50P): disconnected
   Test point 1	FTP sensor 3P connector (female terminals) No. 2:
   Test point 2	Body ground

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

   Is there 1 MΩ or more?

   YES 

   The P/SNSR2 OUT wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0450 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair a short in the P/SNSR2 OUT wire between the PCM (A31) and the FTP sensor.

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

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	FTP sensor 3P connector: disconnected
   Test point 1	FTP sensor 3P connector (female terminals) No. 3:
   Test point 2	Body ground

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

   Is there about 5.0 V?

   YES 

   Replace the FTP sensor .

   NO 

   Go to step 6.

6. Open wire check (VCC6 line)

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

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector E (80P)

   -4. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	FTP sensor 3P connector: disconnected
   	PCM connector E (80P): disconnected
   Test point 1	PCM connector E (80P) No. 63
   Test point 2	FTP sensor 3P connector (female terminals) No. 3:

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

   Is there 1.0 Ω or less?

   YES 

   The VCC6 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0450 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair an open in the VCC6 wire between the PCM (E63) and the FTP sensor.

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

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

   -2. Disconnect the following connector.

   FTP sensor 3P connector

   -3. Connect terminals A and B with a jumper wire.

   Terminal A	FTP sensor 3P connector (female terminals) No. 1:
   Terminal B	FTP sensor 3P connector (female terminals) No. 2:

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

   -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 Voltage	More than 4.48	V

   Data List

   Do the current condition(s) match the malfunction threshold?

   YES 

   Go to step 8.

   NO 

   Replace the FTP sensor .

8. Determine possible failure area (SG6 line, others)

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

   -2. Remove the jumper wire from the FTP sensor 3P connector.

   -3. Turn the vehicle to the ON mode.

   -4. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	FTP sensor 3P connector: disconnected
   Test point 1	FTP sensor 3P connector (female terminals) No. 1:
   Test point 2	FTP sensor 3P connector (female terminals) No. 3:

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

   Is there about 5.0 V?

   YES 

   Go to step 9.

   NO 

   Go to step 10.

9. Open wire check (P/SNSR2 OUT line)

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

   -2. Jump the SCS line with the HDS, and wait more than 1 minute.

   -3. Disconnect the following connector.

   PCM connector A (50P)

   -4. Connect terminals A and B with a jumper wire.

   Terminal A	FTP sensor 3P connector (female terminals) No. 2:
   Terminal B	Body ground

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

   -5. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	FTP sensor 3P connector: disconnected
   	PCM connector A (50P): disconnected
   	FTP sensor 3P connector No. 2: jumped to body ground
   Test point 1	PCM connector A (50P) No. 31
   Test point 2	Body ground

   Is there 1.0 Ω or less?

   YES 

   The P/SNSR2 OUT wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0450 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Repair an open in the P/SNSR2 OUT wire between the PCM (A31) and the FTP sensor.

10. Open wire check (SG6 line)

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

    -2. Jump the SCS line with the HDS, and wait more than 1 minute.

    -3. Disconnect the following connector.

    PCM connector E (80P)

    -4. Connect terminals A and B with a jumper wire.

    Terminal A	FTP sensor 3P connector (female terminals) No. 1:
    Terminal B	Body ground

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

    -5. Measure the resistance between test points 1 and 2.

    Test condition	Vehicle OFF (LOCK) mode
    	FTP sensor 3P connector: disconnected
    	PCM connector E (80P): disconnected
    	FTP sensor 3P connector No. 1: jumped to body ground
    Test point 1	PCM connector E (80P) No. 45
    Test point 2	Body ground

    Is there 1.0 Ω or less?

    YES 

    The SG6 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P0450 goes away and the PCM was substituted, replace the original PCM .

    NO 

    Repair an open in the SG6 wire between the PCM (E45) and the FTP sensor.