AutoCodes – Ford – P0198 2008 Ford Fusion

P0198 2008 Ford Fusion Code - Engine Oil Temperature Sensor Circuit High Input

Quick Answer

The Powertrain Control Module (PCM) monitors the Engine Oil Temperature (EOT) Sensor. Common causes include Faulty Engine Oil Temperature sensor, Engine Oil Temperature sensor harness is open or shorted, Engine Oil Temperature sensor circuit poor electrical connection. 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: P0198 2008 Ford Fusion indicates Engine Oil Temperature Sensor Circuit High Input.
Common causes: Common causes include Faulty Engine Oil Temperature sensor, Engine Oil Temperature sensor harness is open or shorted, Engine Oil Temperature sensor circuit poor electrical connection.
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 1,969

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 May 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0198 2008 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the Engine Oil Temperature (EOT) Sensor. The PCM sets the Diagnostic Trouble Code (DTC) when the Engine Oil Temperature Sensor is not to factory specifications. Indicates Engine Oil Temperature signal voltage is high (low temperature).

OBDII Code P0198 2008 Ford Fusion - Engine Oil Temperature Sensor Circuit High Input - AutoCodes.com — P0198 2008 Ford Fusion Code - Engine Oil Temperature Sensor Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0198 2008 Ford Fusion?

Faulty Engine Oil Temperature sensor
Engine Oil Temperature sensor harness is open or shorted
Engine Oil Temperature sensor circuit poor electrical connection

How to Fix the DTC P0198 2008 Ford Fusion?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0198 2008 Ford Fusion 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 P0198 2008 Ford Fusion code?

Need more information on how to fix the P0198 2008 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0198 2008 Ford Fusion code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P0198 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0198 on a 2008 Ford Fusion?

The common symptoms of OBDII code P0198 on a 2008 Ford Fusion include issues with engine performance, illuminated check engine light, and potentially inaccurate temperature readings on the dashboard.

2. What does the OBDII code P0198 indicate on a 2008 Ford Fusion?

The OBDII code P0198 on a 2008 Ford Fusion indicates a high input in the engine oil temperature sensor circuit.

3. What are the possible causes of OBDII code P0198 on a 2008 Ford Fusion?

Possible causes of OBDII code P0198 on a 2008 Ford Fusion include a faulty engine oil temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose OBDII code P0198 on a 2008 Ford Fusion?

To diagnose OBDII code P0198 on a 2008 Ford Fusion, you can use a scan tool to read the code and check the engine oil temperature sensor's resistance, inspect the sensor wiring and connectors for damage, and test the engine control module for proper operation.

5. Can I continue driving my 2008 Ford Fusion with OBDII code P0198?

It is not recommended to continue driving your 2008 Ford Fusion with OBDII code P0198, as it can lead to potential engine issues and inaccurate temperature readings, impacting overall performance and reliability.

6. How do I repair OBDII code P0198 on a 2008 Ford Fusion?

To repair OBDII code P0198 on a 2008 Ford Fusion, you may need to replace the engine oil temperature sensor, repair or replace damaged wiring or connectors, or reprogram the engine control module if necessary.

7. Is it safe to reset the check engine light after fixing OBDII code P0198 on a 2008 Ford Fusion?

Yes, it is safe to reset the check engine light after fixing OBDII code P0198 on a 2008 Ford Fusion. This can be done using an OBDII scan tool to clear the stored trouble code.

8. Can extreme weather conditions affect OBDII code P0198 on a 2008 Ford Fusion?

Yes, extreme weather conditions such as very high or low temperatures can potentially affect the engine oil temperature sensor readings, leading to OBDII code P0198 on a 2008 Ford Fusion.

9. How often should the engine oil temperature sensor be replaced on a 2008 Ford Fusion?

The engine oil temperature sensor on a 2008 Ford Fusion should be replaced as needed, typically when it fails or malfunctions, causing OBDII code P0198 to trigger.

10. Will OBDII code P0198 on a 2008 Ford Fusion affect fuel efficiency?

OBDII code P0198 on a 2008 Ford Fusion may affect fuel efficiency indirectly by impacting engine performance and potentially causing incorrect fuel mixture adjustments based on inaccurate temperature readings.