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DTC P0453 (2014 2015 2016)

DTC P0453  : FTP Sensor Circuit High Voltage

NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: 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 Fuel and Emissions Systems, or How to Troubleshoot the A/T System (2014 2015) .
DTC Description Confirmed DTC Pending DTC Freeze Frame
P0453 FTP Sensor Circuit High Voltage      

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

    Signal Threshold Current conditions
    Values Unit Values Unit
    FTP SENSOR More than 4.7 V    

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

    YES 

    Go to step 3.

    NO 

    Go to step 2.

  2. Problem verification

    -1. Install the fuel fill cap.

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

    - 3. Monitor the OBD STATUS for DTC P0453 in the DTCs MENU with the HDS.

    DTC Description OBD STATUS
    P0453 FTP Sensor Circuit High Voltage  

    Does the HDS indicate FAILED?

    YES 

    The failure is duplicated. Go to step 3.

    NO 

    If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the FTP sensor and the PCM. 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 No. 1 (BLK)
    Terminal B FTP sensor 3P connector No. 2 (PUR)
    GHH319031Courtesy 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 4.7 V    

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

    YES 

    Go to step 4.

    NO 

    Replace the FTP sensor .

  4. Determine possible failure area (PTANK line, SG7 line)

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

    Test condition Vehicle ON mode
      FTP sensor 3P connector: disconnected
    Test circuit VCC7, SG7
    Test point 1 FTP sensor 3P connector No. 1 (BLK)
    Test point 2 FTP sensor 3P connector No. 3 (ORN)
    GHH319032Courtesy of HONDA, U.S.A., INC.

    Is there about 5.0 V?

    YES 

    Go to step 5.

    NO 

    Go to step 6.

  5. Open wire check (PTANK line)

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

    - 2. Jump the SCS line with the HDS.

    - 3. Disconnect the following connector.

    PCM connector A (51P) - 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)

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

    Terminal A FTP sensor 3P connector No. 2 (PUR)
    Terminal B Body ground
    GHH319033Courtesy of HONDA, U.S.A., INC.

    - 5. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    FTP sensor 3P connector: disconnected
    FTP sensor 3P connector No. 2: jumped to body ground
    PCM connector A (51P): disconnected
    Test circuit PTANK
    Test point 1 PCM connector A (51P) No. 30 (PUR)
    Test point 2 Body ground
    GHH319034Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The PTANK wire is OK. Update the PCM if it does not have the latest software, 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 PTANK wire between the PCM (A30) and the FTP sensor.

  6. Shorted wire check (SG6 line)

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

    - 2. Jump the SCS line with the HDS.

    - 3. Disconnect the following connector.

    PCM connector A (51P) - Refer to: 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 Fuel and Emissions Systems, or How to Troubleshoot the A/T System (2014 2015)

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

    Terminal A FTP sensor 3P connector No. 1 (BLK)
    Terminal B Body ground
    GHH319035Courtesy of HONDA, U.S.A., INC.

    - 5. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    FTP sensor 3P connector: disconnected
    FTP sensor 3P connector No. 1: jumped to body ground
    PCM connector A (51P): disconnected
    Test circuit SG7
    Test point 1 PCM connector A (51P) No. 20 (BLK)
    Test point 2 Body ground
    GHH319036Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The SG6 wire is OK. Update the PCM if it does not have the latest software, 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 SG6 wire between the PCM (A20) and the FTP sensor.

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