System: Powertrain (P-Code)
SAE Standard (Generic)
Family: Engine Overheating Condition
Code P0298: Engine Oil Over Temperature
Diagnostic & Technical Explanation
Code P0298 (Engine Oil Over Temperature) sets when engine coolant or oil temperature exceeds the calibrated safe limit, indicating a real overheating event rather than a sensor fault. Causes are a failed thermostat, a weak or seized water/oil pump, a clogged radiator or oil cooler, or insufficient coolant/oil level.
First-listed procedure
Rank #1
Check coolant/oil levels and inspect for leaks
Easy DIY
This is the first procedure in the authored
consideration order, not a measured cause likelihood. Execute it only when its prerequisites
and diagnostic findings support it. Its cost and labor estimates (where known), the step-by-step procedure and the
remaining 2 procedure(s) are in the licensed dataset. Ordering context.
Full family: Engine Overheating Condition
What this page does not show
This page publishes the fault mechanism and the code index. The licensed dataset adds, for
every one of the 15,886 codes, the full authored repair set (56,729 procedures in total)
with the fields deliberately withheld here:
- Procedures 2..n after the first-listed procedure
- Aftermarket parts cost ranges in USD (
est_parts_cost_min/max_usd)
- Professional labor-hour estimates (
est_labor_hours)
- Step-by-step diagnostic and repair instructions
- Replacement-part mappings and catalog lookups
- 6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)