DTC P0524:00

Engine oil pressure too low

DETECTION CONDITION

• The oil pressure switch is on for a continuous 5 s with the following condition met: (engine oil warning light illuminates when 1 s has elapsed)

• When engine speed is above 650 rpm and engine coolant temperature is 30 °C {86 °F} or less

• When engine speed is above 1,500 rpm and engine coolant temperature is 68 °C {154 °F} or less

• When engine speed is above 2,500 rpm and engine coolant temperature is 68 °C {154 °F} or more

Diagnostic support note

• This is a continuous monitor (other).

• The check engine light does not illuminate.

• FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.

• DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

• Engine oil leakage

• Improper engine oil level

• Oil pressure switch connector or terminals malfunction

• Short to ground in wiring harness between oil pressure switch terminal A and PCM terminal 1P

• PCM connector or terminals malfunction

• Oil pressure switch malfunction

• Oil pump malfunction

• PCM malfunction

STEP

INSPECTION

ACTION

1

• Verify related Service Bulletins and/or on-line repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

2

• Start the engine.

• Verify that there is no engine oil leakage in the hydraulic circuit.

• Is there any leakage?

Yes

Repair or replace the malfunctioning part according to the inspection results, then add genuine motor oil.

Go to Step 8.

No

Go to the next step.

3

• Inspect the engine oil level.

  (See ENGINE OIL LEVEL INSPECTION [SKYACTIV-G 2.5].)

• Is the engine oil level sufficient?

Yes

Go to the next step.

No

Add genuine motor oil, then go to the next step.

(See ENGINE OIL REPLACEMENT [SKYACTIV-G 2.5].)

4

• Switch the ignition off.

• Disconnect the oil pressure switch connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 8.

No

Go to the next step.

5

• Verify that the oil pressure switch connector is disconnected.

• Inspect for continuity between oil pressure switch terminal A (wiring harness-side) and body ground.

• Is there continuity?

Yes

If the short to ground circuit could be detected in the wiring harness:

• Refer to the wiring diagram and verify whether or not there is a common connector between oil pressure switch terminal A and PCM terminal 1P.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

If the short to ground circuit could not be detected in the wiring harness:

• Replace the PCM (short to ground in the PCM internal circuit).

  (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

Go to Step 8.

No

Go to the next step.

6

• Disconnect the PCM connector.

• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).

• Is there any malfunction?

Yes

Repair or replace the connector and/or terminals, then go to Step 8.

No

Go to the next step.

7

• Inspect the engine oil pressure.

  (See OIL PRESSURE INSPECTION [SKYACTIV-G 2.5].)

• Is there any malfunction?

Yes

Replace the oil pump, then go to the next step.

(See OIL PUMP REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

No

Replace the oil pressure switch, then go to the next step.

(See ENGINE OIL SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

8

• Always reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

  (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.5].)

• Drive the vehicle under the following conditions for 5 s.

• Engine speed: above 2,500 rpm

• Perform the DTC Reading Procedure.

  (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.5].)

• Is the same DTC present?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM.

  (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

Go to the next step.

No

Go to the next step.

9

• Perform the “AFTER REPAIR PROCEDURE”.

  (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.5].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [SKYACTIV-G 2.5].)

No

DTC troubleshooting completed.