P0520

DTC P0520

CIRCUIT DESCRIPTION
When the oil pressure is above 4.5 psi, the engine oil pressure switch opens, and the powertrain control module (PCM) senses a high signal voltage. The PCM monitors the oil pressure switch signal circuit and sends a class 2 message to the instrument panel cluster (IPC) indicating the switch status. When the engine oil pressure is low, the engine oil pressure switch closes, and the signal circuit is low.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0520 Engine Oil Pressure (EOP) Sensor Circuit

CONDITIONS FOR RUNNING THE DTC
- The ignition is ON with the engine OFF.
- Engine temperature is 10°C (50°F) less than the last key off temperature.

CONDITIONS FOR SETTING THE DTC
- The PCM detects that the oil pressure switch signal circuit is high with the ignition ON and the engine OFF.
- The above condition is present for greater than 10 seconds.

ACTION TAKEN WHEN THE DTC SETS
The PCM stores the conditions that are present when the DTC sets as Failure Records data only. This information is not stored as Freeze Frame data.

CONDITIONS FOR CLEARING THE DTC
- The DTC becomes history when the conditions for setting the DTC are no longer present.
- The history DTC clears after 40 malfunction-free warm-up cycles.
- The PCM receives the clear code command from the scan tool.

TEST DESCRIPTION

Step 1 - Step 10:

The number below refers to the step number in the diagnostic table.
3. This step tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.