P0520
DTC P0520
CIRCUIT DESCRIPTION
The engine oil pressure (EOP) switch is a normally closed switch that opens with the proper oil pressure. With the ignition switch turned ON and the engine not running, the powertrain control module (PCM) should detect a low signal voltage input. With the engine running, the pressure switch opens, and the PCM should detect a high signal voltage input. The PCM tests the state of the EOP circuit with the ignition switch turned ON, and the engine turned OFF. If the PCM detects a high voltage input on the EOP signal circuit, DTC P1189 will set.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0520 Engine Oil Pressure (EOP) Switch Circuit
CONDITIONS FOR RUNNING THE DTC
- The ignition is ON, with the engine OFF.
- DTCs P0117, P0118, P1111, and P1114 are not set.
CONDITIONS FOR SETTING THE DTC
- The PCM detects that the EOP switch signal circuit is high.
- The above condition is present for greater than 10 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The PCM will not illuminate the malfunction indicator lamp (MIL).
- The PCM will store conditions which were present when the DTC set as Fail Records data only. The information will not be stored as Freeze Frame data.
CONDITIONS FOR CLEARING THE MIL/DTC
- A history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
- The PCM receives the clear code command from the scan tool.
TEST
