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 [09/2023 - ]: Procedure

1. Read the DTCs.

   Powertrain > Engine > Trouble Codes 

   Result

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

   HINT: 

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

Result: 

A 

GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2023 - ] 

Result: 

B 

See step  2

1. Read the value displayed on the GTS.
   1. Disconnect the oil pressure control valve assembly connector.
   2. Put the engine in Inspection Mode (for measuring Exhaust Gas).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode

   3. Start the engine.
   4. With the engine oil temperature at 75 to 85°C (167 to 185°F), read the "Engine Oil Pressure" with the engine speed at 2000 rpm.

      Powertrain > Engine > Data List 

      Tester Display
      Engine Oil Temperature Sensor
      Engine Oil Pressure

2. Read the oil pressure using an oil pressure gauge with adapter.
   1. Install the oil pressure gauge with adapter.

      HINT: 

      Refer to ON-VEHICLE INSPECTION [09/2023 - ]

   2. Put the engine in Inspection Mode (for measuring Exhaust Gas).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode

   3. Start the engine.
   4. With the engine oil temperature at 75 to 85°C (167 to 185°F), read the oil pressure gauge with the engine speed at 2000 rpm.
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 sensor (oil pressure sender gauge assembly) or reconnecting the oil pressure sensor (oil pressure sender gauge assembly) or oil pressure control valve assembly connector, as DTCs may be stored.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPLACE OIL PRESSURE SENSOR (OIL PRESSURE SENDER GAUGE ASSEMBLY). Refer to  REMOVAL [09/2023 - ]