DTC P0190-11: Fuel Rail Pressure Sensor "A" Circuit Short to Ground [03/2022 - 03/2023]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK HARNESS AND CONNECTOR
HINT:
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
- Disconnect the fuel pressure sensor (for high pressure side) connector.
- Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Condition Specified Condition V1-1 (VC) - V1-2 (E2) Ignition switch ON 4.75 to 5.25 V V1-3 (PR) - V1-2 (E2) Ignition switch ON 3.0 to 5.25 V - Turn the ignition switch off and wait for at least 30 seconds.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition V1-1 (VC) - V1-3 (PR) Ignition switch off 178 to 182 kΩ HINT:
Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).
Refer to INITIALIZATION [11/2021 - ]
Result
Proceed to OK NG
Result:
OK
REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE). Refer to REMOVAL [11/2021 - ]
Result:
NG
See step 2
- CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) - ECM)
- Disconnect the fuel pressure sensor (for high pressure side) connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition V1-1 (VC) - B48-98 (VCPR) Always Below 1 Ω V1-3 (PR) or B48-97 (PR) - Body ground and other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [11/2021 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR