DTC P0195-11: Engine Oil Temperature Sensor Circuit Short to Ground [08/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 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.
Pre-procedure1
- Disconnect the engine oil temperature sensor connector.
- Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition Result B72-3 (VC) - B72-2 (GND) Ignition switch ON 4.5 to 5.5 V V B72-4 (TOUT) - B72-2 (GND) Ignition switch ON 0.54 to 4.86 V V
Post-procedure1
- Turn the ignition switch off and wait for at least 30 seconds.
Pre-procedure2
- None.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Switch Condition Specified Condition Result B72-3 (VC) - B72-4 (TOUT) Ignition switch off 171 to 189 kΩ kΩ Result
Proceed to OK NG
Post-procedure2
- None.
Result:
OK
REPLACE OIL PRESSURE AND TEMPERATURE SENSOR. Refer to REMOVAL [08/2023 - ]
Result:
NG
See step 2
- CHECK HARNESS AND CONNECTOR (ENGINE OIL TEMPERATURE SENSOR - ECM)
Pre-procedure1
- Disconnect the engine oil temperature sensor connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result B72-3 (VC) - B28-99 (VCPE) Always Below 1 Ω Ω B72-4 (TOUT) or B28-123 (THEO) - Body ground and other terminals Always 10 kΩ or higher kΩ Result
Proceed to OK NG
Post-procedure1
- None.
Result:
OK
REPLACE ECM. Refer to REMOVAL [08/2023 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR