For a complete wiring diagram Refer to Section 8WWhen Monitored:With the engine running.Set Condition:The Oil Pressure Sensor indicates low oil pressure for 5 seconds.Possible CausesMECHANICAL PROBLEMOIL PRESSURE SENSOR FAILUREOIL PRESSURE SENSOR CIRCUIT(S) OPEN OR HIGH RESISTANCEINTERMITTENT CONDITION1. CHECKING FOR CURRENT DTCPerform Pre-diagnostic test before continuingEnsure the engine oil level is at the specified level and the engine oil filter is the specified filter for this specific engine application.If there are Engine Oil Pressure Sensor circuit High/Low DTC's, repair the circuit High/Low DTC's before continuing with this test.Turn the ignition on.With the scan tool, erase ECM DTCs.Start the engine several times, letting the engine run for at least 30 seconds at a time.With the scan tool, read ECM DTCs.Did this DTC set again?YesGo To2NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.2. MECHANICAL PROBLEMRefer to the Service Information and perform the Engine Oil Pressure Test.Is the oil pressure within specification?YesGo To3NoRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)3. CHECKING OP SENSOR CIRCUITSTurn the ignition off.Disconnect the Oil Pressure Sensor harness connector.Disconnect the ECM harness connectors.Measure the resistance of the each of the Oil Pressure Sensor circuits (3) between the Oil Pressure Sensor and the ECM harness connectors.Is the resistance below 10.0 ohms for each of the measurements?YesReplace the Oil Pressure Sensor.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoRepair the Oil Pressure Sensor circuit(s) that measured above 10.0 ohms for an open.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)