AutoCodes – Generic – P0298

P0298 Code - Engine Oil Over Temperature Condition

Quick Answer

Indicates the Engine Oil Temperature Protection (EOT) strategy in the Engine Control Module (ECM) has been activated. Common causes include Low or dirty motor oil condition, Faulty Oil Pressure Switch, Faulty Engine Oil Temperature (EOT) sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0298 indicates Engine Oil Over Temperature Condition.
Common causes: Common causes include Low or dirty motor oil condition, Faulty Oil Pressure Switch, Faulty Engine Oil Temperature (EOT) sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 17,258

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 14, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0298 Description

Indicates the Engine Oil Temperature Protection (EOT) strategy in the Engine Control Module (ECM) has been activated. This temporarily prohibits high engine speed operation by disabling injectors, reducing the risk of engine damage from high engine oil temperature.

OBDII Code P0298 - Engine Oil Over Temperature Condition - AutoCodes.com — P0298 Code - Engine Oil Over Temperature Condition

What does this mean?

What are the Possible Causes of the DTC P0298?

Low or dirty motor oil condition
Faulty Oil Pressure Switch
Faulty Engine Oil Temperature (EOT) sensor
Engine overheating condition
Very high engine RPM for an extended period of time

How to Fix the DTC P0298?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

On engines which are equipped with an oil temperature sensor, the Engine Control Module (ECM) reads oil temperature to determine if it is excessive. When an oil temperature sensor is not present, the ECM uses an oil algorithm to infer actual temperature. Engine shutdown strategy function is the same on vehicles with and without oil temperature sensors.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0298 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0298 code?

Need more information on how to fix the P0298 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0298 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0298 Chrysler — Engine Oil Temperature Too High
P0298 Dodge — Engine Oil Temperature Too High
P0298 Ford — Engine Oil Over Temperature Condition
P0298 Jeep — Engine Oil Temperature Too High
P0298 Mazda — Engine Oil Protection Strategy Enabled
P0298 RAM — Engine Oil Temperature Too High

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.