P0298
Engine Oil Over Temperature
Engine oil temperature exceeded the safe maximum. Risk of oil breakdown and bearing damage.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Oil cooler failure or low oil levelCommon
Parts involved
- Oil Temp Sensor
- Oil Cooler
P0298 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.