DTC P0453 (2018 2019)

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. 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.

   -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
   Tank Internal Pressure	More than 409.40	mmHg

   Data List

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

   YES 

   Go to step 3.

   NO 

   Go to step 2.

2. Problem verification

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

   -2. Install the fuel fill cap.

   -3. Enter the maintenance mode, then start the engine .

   -4. Hold the engine speed at 3, 000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.

   -5. Monitor the OBD STATUS for DTC P0453 in the DTCs MENU with the HDS.

   DTC Description	OBD STATUS
   P0453 FTP Sensor Circuit High Voltage

   OBD Status

   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 on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot . 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
   Tank Internal Pressure	More than 409.40	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 (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 5.

   NO 

   Go to step 6.

5. 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. Check for continuity 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	PCM connector A (50P) No. 31
   Test point 2	FTP sensor 3P connector (female terminals) No. 2:

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

   Is there continuity?

   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 .

   NO 

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

6. 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. Check for continuity 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. 45
   Test point 2	FTP sensor 3P connector (female terminals) No. 1:

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

   Is there continuity?

   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 .

   NO 

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