P0520

DTC P0520

CIRCUIT DESCRIPTION
The engine oil pressure 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 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 engine oil pressure circuit with the ignition switch turned ON, and the engine turned OFF. If the PCM detects a high voltage input on the engine oil pressure signal circuit, DTC P0520 will set.

CONDITIONS FOR RUNNING THE DTC
- The ignition is ON, with the engine OFF.
- DTC codes P0117, P0118, P1111, and P1114 are not set.

CONDITIONS FOR SETTING THE DTC
- The PCM detects that the engine oil pressure 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

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