DTC P0195-15: Engine Oil Temperature Sensor Circuit Short to Battery or Open [08/2023 - ]: Procedure

1. Check the vehicle specification.

   Result

   Result	Proceed to
   for Mexico Models	A
   except Mexico Models	B

Result: 

B 

See step  3

Result: 

A 

See step  2

Pre-procedure1

• Disconnect the engine oil temperature sensor connector.
• Connect terminals 1 (THEO) and 2 (E2) of the engine oil temperature sensor connector on the wire harness side.

• According to the display on the GTS, read the Data List.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *1	Engine Oil Temperature Sensor	*2	ECM
  *a	Front view of wire harness connector (to Engine Oil Temperature Sensor)	-	-

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

  Result

  Result	Proceed to
  Engine Oil Temperature Sensor is more than 168°C	A
  None of the above conditions are met	B

  HINT: 

  168°C = 334°F

Post-procedure1

• None.

Result: 

A 

REPLACE ENGINE OIL TEMPERATURE SENSOR. Refer to  REMOVAL [10/2022 - ] 

Result: 

B 

See step  4

Pre-procedure1

• Disconnect the engine oil temperature sensor connector.
• Connect terminals 1 (THEO) and 2 (E2) of the engine oil temperature sensor connector on the wire harness side.

• According to the display on the GTS, read the Data List.

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

  *1	Engine Oil Temperature Sensor	*2	ECM
  *a	Front view of wire harness connector (to Engine Oil Temperature Sensor)	-	-

  Powertrain > Engine > Data List 

  Tester Display
  Engine Oil Temperature Sensor

  Result

  Result	Proceed to
  Engine Oil Temperature Sensor is more than 170°C	A
  None of the above conditions are met	B

  HINT: 

  170°C = 338°F

Post-procedure1

• None.

Result: 

A 

REPLACE ENGINE OIL TEMPERATURE SENSOR. Refer to  REMOVAL [10/2022 - ] 

Result: 

B 

See step  4

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
  B7-1 (THEO) - B27-99 (THEO)	Always	Below 1 Ω	Ω
  B7-2 (E2) - B27-100 (EPEO)	Always	Below 1 Ω	Ω
  B7-1 (THEO) or B27-99 (THEO) - Other terminals	Always	10 kΩ or higher	kΩ

  Result

  Proceed to
  OK
  NG

Post-procedure1

• None.

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [10/2022 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR