P0298
Stop drivingYour engine oil is getting too hot.
Code P0298 means your engine oil is too hot. Common causes: Low oil (40%), bad oil temp sensor (25%), oil cooler failure (20%). Drivability: No, stop driving immediately. Repair cost: $50-$300 DIY, $150-$800 professional.
Can I Drive With P0298?
No, stop driving
Immediate repair needed
Stop driving immediately if: Flashing CEL, loud knocking noises, burning smell, significant power loss, or any indication of engine overheating.
Symptoms of P0298
- 1Check Engine Light is on
- 2Engine temperature gauge reads high
- 3Reduced engine power or 'limp mode'
- 4Burning oil smell
- 5Engine knocking or ticking noises (severe cases)
- 6Oil pressure warning light (severe cases)
Common Causes of P0298
Parts most likely causing this code, ranked by probability
Not enough oil means less capacity to absorb and dissipate heat, causing the remaining oil to overheat.
40% of P0298 cases are fixed by adding engine oil
A faulty sensor can incorrectly report high oil temperatures to the engine computer.
25% of P0298 cases are fixed by replacing this sensor
A clogged or leaking oil cooler prevents the oil from being properly cooled, leading to overheating.
20% of P0298 cases are fixed by replacing the oil cooler
Problems with the radiator, water pump, thermostat, or cooling fan can cause the entire engine to overheat, which then overheats the oil.
10% of P0298 cases are fixed by addressing cooling system components
Using oil that is too thin for your vehicle's operating conditions or climate can lead to excessive heat generation and breakdown.
5% of P0298 cases are fixed by using the correct oil viscosity
Check These First (Before Buying Parts)
- Check your engine oil level on a flat surface after the engine has cooled for 10-15 minutes. Add oil if it's below the 'add' mark.
- Visually inspect for any obvious oil leaks around the engine, especially near the oil filter housing or oil cooler.
- Check your coolant reservoir level and ensure the radiator fan engages when the engine gets warm.
How to Diagnose P0298
- 1Immediately check your engine oil level and condition. Add oil if low.
- 2Visually inspect the engine for any oil leaks, especially around the oil cooler.
- 3Check your coolant level and condition. Ensure the radiator fan is operating.
- 4Use an OBD-II scan tool to read live engine oil temperature data (if available) and compare it to coolant temperature.
- 5If the oil level is correct and no leaks are found, test the engine oil temperature sensor for proper readings.
P0298 on Popular Vehicles
Ford F-150
2004-2024Ford F-150s, particularly those with EcoBoost engines, can experience P0298 due to heavy towing or sustained high-load operation, which stresses the oil cooling system. Oil cooler failures are more common in these scenarios.
60% fixed by addressing oil cooler or oil level
Chevrolet Silverado
2007-2024Similar to the F-150, Silverado trucks used for heavy hauling or towing can trigger P0298. Ensure the oil level is correct and inspect the oil cooler for any blockages or leaks.
55% fixed by addressing oil level or oil cooler
Toyota Camry
2007-2024P0298 is less common on a Toyota Camry unless there's severe neglect of oil changes, a significant oil leak leading to low oil, or a rare oil temperature sensor failure.
70% fixed by adding oil or replacing the sensor
Frequently Asked Questions
What does P0298 mean?
P0298 indicates that your engine's computer has detected an over-temperature condition in the engine oil. This means the oil is hotter than its safe operating range.
Can I drive with P0298?
No, stop driving immediately. Driving with engine oil over-temperature can cause severe and irreversible engine damage, including seizing the engine.
Will P0298 clear itself?
No, P0298 will not clear itself. This code signifies a critical issue that requires immediate attention and repair. The underlying problem must be fixed before the code will clear, either on its own after several drive cycles or by using a scan tool.
How do I fix P0298 myself?
Start by checking your engine oil level and adding oil if it's low. If the level is good, inspect for leaks around the oil cooler. If no leaks are found, you might need to replace the engine oil temperature sensor or the oil cooler itself. A scan tool is essential for proper diagnosis.
How much does it cost to fix P0298?
DIY costs range from $50 (for adding oil or replacing a sensor) to $300 (for an oil cooler). Professional repair costs typically range from $150 (diagnosis and oil top-off) to $800 (for oil cooler replacement and labor).
P0298 keeps coming back - why?
If P0298 keeps returning, it means the root cause of the oil over-temperature has not been fully addressed. This could be due to a misdiagnosis, a persistent leak, an overlooked cooling system issue, or a deeper internal engine problem.
Will P0298 fail emissions/smog test?
Yes, P0298 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on for any reason is an automatic failure in most jurisdictions.
What's the difference between P0298 and P0217?
P0298 specifically indicates an over-temperature condition of the engine oil. P0217 indicates a general engine over-temperature condition, which usually refers to the coolant temperature. While related, P0298 points directly to the oil's temperature.
P0298 on Ford F-150?
On Ford F-150s, especially EcoBoost engines, P0298 can sometimes be triggered by heavy towing or sustained high-load driving, stressing the oil cooling system. Check the oil cooler and ensure proper oil viscosity for your driving conditions.
Questions to Ask Your Mechanic
Did you check the actual oil temperature with a scan tool, not just rely on the sensor reading?
Good answer: Yes, I monitored the live data and confirmed the oil temperature was indeed high, or that the sensor was reading incorrectly compared to other temperature sensors.
What did you find regarding the engine oil level and its condition?
Good answer: The oil level was critically low, or the oil was very dark and degraded, indicating it needed replacement. Or, the oil level and condition were good, leading me to check other components.
Repair Cost Estimate
DIY Repair
Parts only
$50-$300
Shop Repair
Parts + labor
$150-$800
Save $100-$500 by doing it yourself
Difficulty
intermediate
Time
0.5-4 hours
Intermediate. While checking oil is beginner-friendly, diagnosing sensor issues or replacing an oil cooler requires specific tools like a scan tool and some mechanical experience.
Cost of Waiting
Ignoring P0298 leads to catastrophic engine failure. Overheated oil loses its lubricating properties, causing excessive friction, bearing damage, and eventually seizing the engine. A $50 oil top-off now prevents a $3,000-$8,000 engine replacement later.
While You're In There...
If you're draining oil to replace an oil cooler or if the oil is old, replacing the filter is a low-cost, essential maintenance item.
If you're replacing the oil cooler, you will likely need to drain and refill some coolant. It's a good time to ensure your coolant is fresh and at the correct level.
Tools You'll Need
- OBD-II Scan Tool
- Wrench Set
- Socket Set
- Oil Filter Wrench (if changing oil)
- Drain Pan
- Torque Wrench
- Coolant Funnel (if working on oil cooler)
P0298 is a serious code that demands immediate attention, but catching it early and addressing the cause, often a simple oil top-off or sensor replacement, can prevent catastrophic engine damage.
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Your Next Steps
Step 1: Check your engine oil level and condition immediately. If low, add the correct type and amount of oil. If the oil looks very dark or smells burnt, perform an oil and filter change.
Step 2: If the oil level is correct, use an OBD-II scan tool to check for live oil temperature data. Compare this reading to the coolant temperature. If the oil temp sensor reading is erratic or significantly different from what's expected, consider replacing the engine oil temperature sensor.
Step 3: If the oil temperature is genuinely high and the sensor appears accurate, inspect the engine oil cooler for external damage, leaks, or internal blockages. Replace the oil cooler if it's faulty. Also, ensure your main engine cooling system (radiator, fan, water pump) is functioning correctly.