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DTC P0450

DTC P0450  : FTP Sensor Out of Range

NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the A/T System (2014 2015), or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016) .
DTC Description Confirmed DTC Pending DTC
P0450 FTP Sensor Out of Range    

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: Take the emergency fuel funnel in the cargo area.

    - 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 More than 29.604 mmHg    

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

    YES 

    Go to step 3.

    NO 

    Go to step 2.

  2. Problem verification

    -1. Remove the emergency fuel funnel from the fuel filler neck.

    - 2. Start the engine.

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

    - 4. Monitor the OBD STATUS for DTC P0450 in the DTCs MENU with the HDS.

    DTC Description OBD STATUS
    P0450 FTP Sensor Out of Range  

    Does the HDS indicate FAILED?

    YES 

    The failure is duplicated. Go to step 3.

    NO 

    NOTE: If the HDS indicates PASSED, there is an intermittent failure and the system is OK at this time. Check for poor connections or loose terminals at the 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 - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016), or How to Troubleshoot the A/T System (2014 2015) . If the HDS indicates NOT COMPLETED, keep idling until a result comes on.
  3. 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:
    GHH319005Courtesy 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 More than 29.604 mmHg    

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

    YES 

    Go to step 4.

    NO 

    Replace the FTP sensor .

  4. Determine possible failure area (GND 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:
    GHH319008Courtesy of HONDA, U.S.A., INC.

    Is there about 5.0 V?

    YES 

    Go to step 5.

    NO 

    Go to step 7.

  5. Open wire check (PTANK 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 (51P)

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

    Terminal A FTP sensor 3P connector (female terminals) No. 2:
    Terminal B Body ground
    GHH319010Courtesy 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 (51P): disconnected
      FTP sensor 3P connector No. 2: jumped to body ground
    Test point 1 PCM connector A (51P) No. 30 - Refer to: Fuel and Emissions Systems DTC Troubleshooting Index (2017 2018), or Brake Booster Pressure Monitoring System DTC Troubleshooting Index (2016 2017 2018 2019 2020), or Fuel and Emissions Systems DTC Troubleshooting Index(KA/KC models) (2016), or A/T System DTC Troubleshooting Index(KA/KC models) (2014 2015), or Fuel and Emissions Systems DTC Troubleshooting Index(KA/KC models) (2014 2015), or Fuel and Emissions Systems DTC Troubleshooting Index (2019 2020)
    Test point 2 Body ground

    Is there 1 Ω or less?

    YES 

    The PTANK wire is OK. Go to step 6.

    NO 

    Repair an open in the PTANK wire between the PCM (A30) and the FTP sensor.

  6. Open wire check (VCC2 line)

    -1. Remove the jumper wire from the FTP sensor 3P connector.

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

    Terminal A FTP sensor 3P connector (female terminals) No. 3:
    Terminal B Body ground
    GHH319012Courtesy of HONDA, U.S.A., INC.

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

    Test condition Vehicle OFF (LOCK) mode
    FTP sensor 3P connector: disconnected
    FTP sensor 3P connector No. 3: jumped to body ground
    PCM connector A (51P): disconnected
    Test point 1 PCM connector A (51P) No. 19 - Refer to: Fuel and Emissions Systems DTC Troubleshooting Index(KA/KC models) (2014 2015), or A/T System DTC Troubleshooting Index(KA/KC models) (2014 2015), or Fuel and Emissions Systems DTC Troubleshooting Index (2019 2020), or Fuel and Emissions Systems DTC Troubleshooting Index (2017 2018), or Brake Booster Pressure Monitoring System DTC Troubleshooting Index (2016 2017 2018 2019 2020), or Fuel and Emissions Systems DTC Troubleshooting Index(KA/KC models) (2016)
    Test point 2 Body ground

    Is there 1 Ω or less?

    YES 

    The VCC2 wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2016), or PCM Removal and Installation (2014 2015) .

    NO 

    Repair an open in the VCC2 wire between the PCM (A19) and the FTP sensor.

  7. Open wire check (GND 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 (51P)

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

    Terminal A FTP sensor 3P connector (female terminals) No. 1:
    Terminal B Body ground
    GHH319014Courtesy 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 (51P): disconnected
      FTP sensor 3P connector No. 1: jumped to body ground
    Test point 1 PCM connector A (51P) No. 20 - Refer to: Fuel and Emissions Systems DTC Troubleshooting Index(KA/KC models) (2014 2015), or Brake Booster Pressure Monitoring System DTC Troubleshooting Index (2016 2017 2018 2019 2020), or Fuel and Emissions Systems DTC Troubleshooting Index(KA/KC models) (2016), or Fuel and Emissions Systems DTC Troubleshooting Index (2017 2018), or A/T System DTC Troubleshooting Index(KA/KC models) (2014 2015), or Fuel and Emissions Systems DTC Troubleshooting Index (2019 2020)
    Test point 2 Body ground

    Is there 1 Ω or less?

    YES 

    The GND wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2016) .

    NO 

    Repair an open in the GND wire between the PCM (A20) and the FTP sensor.

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