DTC P0520-24: Engine Oil Pressure Sensor/Switch "A" Signal Stuck High; DTC P0520-2A: Engine Oil Pressure Sensor/Switch "A" Signal Stuck in Range [10/2019 - 08/2020]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Trouble Codes.
5. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

   Result	Proceed to
   DTC P0520-24 or P0520-2A is output	A
   DTC P0520-24 or P0520-2A and other DTCs are output	B

   HINT: 

   If any DTCs other than P0520-24 or P0520-2A are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 08/2020] 

Result: 

A 

See step  2

1. Read the value displayed on the Techstream.
   1. Connect the Techstream to the DLC3.
   2. Disconnect the oil pressure control valve assembly connector.
   3. Turn the power switch on (IG).
   4. Turn the Techstream on.
   5. Put the engine in Inspection Mode (Maintenance Mode).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode

   6. Start the engine.
   7. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Engine Oil Temperature Sensor and Engine Oil Pressure.

      Powertrain > Engine > Data List 

      Tester Display
      Engine Speed
      Engine Oil Temperature Sensor
      Engine Oil Pressure

   8. With the engine oil temperature at 75 to 85°C (167 to 185°F), read the "Engine Oil Pressure" with the engine speed at 2500 rpm.
2. Read the oil pressure using an oil pressure gauge with adapter.
   1. Install the oil pressure gauge.

      Refer to PROCEDURE - Step 3

   2. Turn the power switch on (IG).
   3. Turn the Techstream on.
   4. Put the engine in Inspection Mode (Maintenance Mode).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode

   5. Start the engine.
   6. Enter the following menus: Powertrain / Engine / Data List / Engine Speed and Coolant Temperature.

      Powertrain > Engine > Data List 

      Tester Display
      Engine Speed
      Coolant Temperature

      HINT: 

      When the engine oil pressure and temperature sensor is removed, the engine oil temperature cannot be checked, so refer to "Coolant Temperature".

   7. Maintain "Coolant Temperature" at 90 to 95°C (194 to 203°F) for 3 minutes, and then read the oil pressure gauge value at 2500 rpm.

      HINT: 

      • Race the engine as necessary to maintain "Coolant Temperature" at 90 to 95°C (194 to 203°F).
      • If maintained for 3 minutes or more, the engine oil temperature may exceed 85°C (185°F).
3. Compare the Data List value and the oil pressure gauge reading.

   OK

   Data List value and gauge reading are within +/-50 kPa (7.3 psi) of each other

   HINT: 

   Be sure to clear the DTCs after reinstalling the oil pressure and temperature sensor or reconnecting the oil pressure and temperature sensor or oil pressure control valve assembly connector, as DTCs may be stored.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [06/2018 - 08/2020] 

Result: 

NG 

REPLACE OIL PRESSURE AND TEMPERATURE SENSOR. Refer to  REMOVAL [07/2019 - ]