DTC P0453 (2018 2019 2020)

DTC 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. 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 27.23	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. 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, 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 A/T System (2014 2015), or 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) . 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:

   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	More than 27.23	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 (PTANK line, GND line)

   -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. 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 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, 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

   Courtesy 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 point 1	PCM connector A (51P) No. 30 - Refer to: PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2016), or PCM Connector for Inputs and Outputs (2017 2018 2019 2020)
   Test point 2	Body ground

   Is there continuity?

   YES 

   The PTANK 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 PTANK wire between the PCM (A30) and the FTP sensor.

6. 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

   Courtesy 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 point 1	PCM connector A (51P) No. 20 - Refer to: PCM Connector for Inputs and Outputs (2017 2018 2019 2020), or PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2016)
   Test point 2	Body ground

   Is there continuity?

   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.