P0298: Engine Oil Over Temperature Condition

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

P0298 - ENGINE OIL OVER TEMPERATURE CONDITION

Description:	Indicates the Engine Oil Temperature Protection strategy in the PCM has been activated. This temporarily prohibits high engine speed operation by disabling injectors, reducing the risk of engine damage from high engine oil temperature. NOTE: On engines which are equipped with an oil temperature sensor, the PCM reads oil temperature to determine if it is excessive. When an oil temperature sensor is not present, the PCM uses an oil algorithm to infer actual temperature. Engine shutdown strategy function is the same on vehicles with and without oil temperature sensors.
Possible Causes:	Very high engine RPM for an extended period of time. Overheating condition. Malfunction EOT sensor or circuit (vehicles w/EOT sensor). Base engine concerns.
Diagnostic Aids:	Engine operating in high RPM range, due to improper gear selection. May cause Lack/Loss of Power or Surge customer concern.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	-	GO to PINPOINT TEST DY: ENGINE OIL TEMPERATURE (EOT) SENSOR Step 13.