P0520
DTC P0520
CIRCUIT DESCRIPTION
When the oil pressure is above 4.5 psi, the oil pressure switch opens, and the engine control module (ECM)/powertrain control module (PCM) senses a high signal voltage. The ECM/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 (EOP) is low, the EOP switch closes, the signal circuit is low DTC P0520 sets.
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 ECM/PCM 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 ECM/PCM records the operating conditions at the time the diagnostic test fails. The ECM/PCM displays this information in the Failure Records on the scan tool.
- The 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 ECM/PCM 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.
- If the DTC is not current, it may be due to an intermittent condition.
TEST
