P0520
DTC P0520
CIRCUIT DESCRIPTION
The powertrain control module (PCM) or the engine control module (ECM) monitors the signal circuit of the engine oil pressure (EOP) sensor. When the oil pressure is high, the sensor is open, and the PCM/ECM senses a high signal voltage. When the oil pressure is low, the sensor is closed, and the PCM/ECM senses a low signal voltage.
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 ON.
CONDITIONS FOR SETTING THE DTC
- The PCM/ECM detects that the EOP sensor signal circuit is pulled low.
- The above condition is present for greater than 5 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The PCM/ECM records the operating conditions at the time the diagnostic test fails. The PCM/ECM displays this information in the Failure Records on the scan tool.
- The instrument panel cluster (IPC) illuminates the engine oil pressure indicator.
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/ECM receives a clear code command from the scan tool.
DIAGNOSTIC AIDS
Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.
Refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics
TEST
