DTC P0452 (2018 2019)
DTC P0452 : FTP Sensor Circuit Low Voltage
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P0452 FTP Sensor Circuit Low Voltage |
DTC (PGM-FI)
- 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 Less than -97.00 mmHg Data List
Do the current condition(s) match the malfunction threshold?
YES
Go to step 3.
NO
Go to step 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 , and let it idle.
-4. Monitor the OBD STATUS for DTC P0452 in the DTCs MENU with the HDS.
DTC Description OBD STATUS P0452 FTP Sensor Circuit Low 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.
- 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 Tank Internal Pressure Less than -97.00 mmHg Data List
Do the current condition(s) match the malfunction threshold?
YES
Go to step 4.
NO
Go to step 5.
- 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. 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 FTP sensor 3P connector (female terminals) No. 2: Test point 2 Body ground Is there continuity?
YES
Repair a short in the P/SNSR2 OUT wire between the PCM (A31) and the FTP sensor.
NO
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 .
- 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 Is there about 5.0 V?
YES
NO
Go to step 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. 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. 63 Test point 2 FTP sensor 3P connector (female terminals) No. 3: Is there continuity?
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 .
NO
Repair an open in the VCC6 wire between the PCM (E63) and the FTP sensor.