Error Code P0298: What It Means & What To Do?

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Is your engine giving out strange noises? Or is your vehicle not giving the kind of performance it used to? You might be facing trouble with the OBD error code P0298.

The error code P0298 is usually generated if the engine is overheating or has recently been overheating.

If an engine is overheating or has recently overheated, according to the signals given by the engine oil temperature sensor, the PCM might detect it and generate the error code P0298. The error code P0298 might be indicative of faults in parts of a vehicle that are causing the vehicle to be overheated. The overheating of a vehicle is largely caused by some faulty parts or loose connections in the engine or a defective sensor or circuit. Overheating of a vehicle can cause much harm and should immediately be looked at extensively till the problem is singled out and fixed by repairing or replacing the faulty part or parts.

The conditions in which the error code is generated:

• Engine overheating caused by an engine cooling system condition
• Engine oil temperature sensor is defective
• Open or shorted circuit Corroded wiring and/or connectors
• Low oil level

Some of the parts that might be causing the appearance of error code P0299 have been given below. You can get your vehicle checked by a mechanic/technician or do a self-diagnosis to see if you can pinpoint the pain area.

1. Engine Oil - Engine oil is the blood flowing in the vehicle that keeps the engine moving. Engine oil should be timely replaced to revitalize your engine and increase the vehicle’s life span. Engine oil such as automotive oils, fluids, lubricants and additives are important for the vehicle to work at optimum levels and should be changed early to keep the vehicle’s dynamic circulatory system strong.
2. Temperature Sensor - The temperature sensors are essential to keep a check on an overheating vehicle. If the temperature sensors themselves are faulty, they would not give a correct indication to the automated systems and the vehicle’s functionality will deter. Hence, they should be fixed or replaced immediately in case an error is determined.
3. Sensor - In today’s automated systems, a sensor controls various assets of a vehicle, such as temperature, speed, levels of fuel and coolants, which in turn helps the vehicle to move smoothly and at optimum levels. If the sensors become faulty, they tamper with the overall functionality of many parts of the vehicle and hence should be replaced timely.
4. Connectors - In case there is a problem with the connectors, this can lead to the error code P0298. These faults can even cause breakdowns of the vehicle and should be immediately looked into to avoid inconveniences later.

Before a vehicle breaks down or starts emanating heat and damaging internal parts, it shows some symptoms that can indicate there is an error code being generated and that code might come out to be P0298. These symptoms should not be ignored since they might lead you to pinpoint the pain areas before some real damage is done. The following might be some of the symptoms that you might notice in case the error is there. If any of the symptoms are present, you can conduct a further extensive test to check for the part(s) that might be faulty and need repair or replacement.

Common Symptoms

• Engine is making unusual noises or emanating unusual smells
• There is leakage in the engine coolant
• The engine performance seems to be diminished than it used to be
• Engine cooling system codes are appearing

Have a look at some ways with which you can correct the P0298 code:

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If the error code P0298 is detected by the OBD-II scanner, a chemical block test will be conducted by the mechanic, which will provide a comparative reading so that once a part is replaced by the mechanic, such as a thermostat, water pump, radiator, etc., he can check the reading again to ensure that the issue has been fixed by repairing/replacing the mentioned part.

Next, the mechanic might look for a coolant leakage by using a cooling system pressure tester. In case no leakage is detected, the mechanic will continue the test on other components, such as the thermostat, cooling fan, or radiator, till he/she finds a component that is giving a voltage reading that is out of range of the specifications given by the manufacturer.

After a repair or replacement has been done, the mechanic should clear the code from the PCM and retest the system, to ensure that the done repair/replacement has actually eliminated the issue that was causing the error code P0298.

Common Mistakes When Diagnosing the P0298 Code

If a thorough system check hasn’t been performed and the parts have been replaced without a thorough check, it’ll cause a misdiagnosis and the problem will pester. Many technicians will simply replace the leakage cooling system components instead of performing a thorough check on the entire cooling system to rule out all the issues. While the repaired/replaced parts might actually have needed fixing, a full system check is necessary to rule out any underlying issues that might cause a problem later and might ruin the replacement components just as the leaking components.