AutoCodes – Ford – P1184 2009 Ford Fusion

P1184 2009 Ford Fusion Code - Engine Oil Temperature Out Of Self Test Range

Quick Answer

The Engine Oil Temperature (EOT) sensor is a thermistor device in which resistance changes with temperature. Common causes include Engine not at operating temperature, Cooling system problem of stuck thermostat, 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: P1184 2009 Ford Fusion indicates Engine Oil Temperature Out Of Self Test Range.
Common causes: Common causes include Engine not at operating temperature, Cooling system problem of stuck thermostat, 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 1,809

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1184 2009 Ford Fusion Description

The Engine Oil Temperature (EOT) sensor is a thermistor device in which resistance changes with temperature. The electrical resistance of a thermistor decreases as the temperature increases and the resistance increases as the temperature decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Engine Control Module (ECM) corresponding to temperature.
Thermistor-type sensors are considered passive sensor. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow.
Voltage that is dropped across a fixed resistor in a series with the sensor resistor determines the voltage signal at the ECM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The EOT sensor measures the temperature of the engine oil. The sensor is typically threaded into the engine oil lubrication system. The ECM can use the EOT sensor input to determine the following:
- On variable cam timing (VCT) applications the EOT input is used to adjust the VCT control gains and logic for camshaft timing.
- The ECM can use the EOT sensor input in conjunction with other ECM inputs to determine oil degradation
- The ECM can use EOT sensor input to initiate a soft engine shutdown. To prevent engine damage from occurring as a result of high oil temperature, the ECM has the ability to initiate a soft engine shutdown. Whenever engine RPM exceeds a calibrated level for a certain period of time, the ECM will begin reducing power by disabling engine cylinders.

OBDII Code P1184 2009 Ford Fusion - Engine Oil Temperature Out Of Self Test Range - AutoCodes.com — P1184 2009 Ford Fusion Code - Engine Oil Temperature Out Of Self Test Range

What does this mean?

What are the Possible Causes of the DTC P1184 2009 Ford Fusion?

Engine not at operating temperature
Cooling system problem of stuck thermostat
Faulty Engine Oil Temperature (EOT) sensor
Engine Oil Temperature (EOT) sensor harness is open or shorted
Engine Oil Temperature (EOT) sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1184 2009 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 P1184 2009 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 P1184 2009 Ford Fusion code?

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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 P1184 2009 Ford Fusion Code

1. What are the common symptoms of OBDII code P1184 on a 2009 Ford Fusion?

When the Engine Oil Temperature Out Of Self Test Range code (P1184) appears on a 2009 Ford Fusion, common symptoms may include engine overheating, poor fuel economy, or the vehicle going into limp mode.

2. What can cause the OBDII code P1184 to trigger on a 2009 Ford Fusion?

The P1184 code on a 2009 Ford Fusion is usually triggered by issues such as a faulty engine oil temperature sensor, a malfunctioning thermostat, low engine oil level, or a problem with the engine cooling system.

3. How serious is the OBDII code P1184 on a 2009 Ford Fusion?

Ignoring the P1184 code on a 2009 Ford Fusion can lead to potential engine damage due to overheating. It is important to address this issue promptly to prevent further complications.

4. Can I continue driving my 2009 Ford Fusion with the P1184 trouble code?

It is not recommended to drive your 2009 Ford Fusion with the P1184 code present, as it can result in engine overheating and other issues. It's best to have the vehicle inspected and repaired as soon as possible.

5. How do I diagnose and repair the OBDII code P1184 on my 2009 Ford Fusion?

Diagnosing the P1184 code involves checking the engine oil temperature sensor, inspecting the thermostat, verifying the engine oil level, and examining the cooling system. Repair typically involves replacing faulty components or addressing underlying issues.

6. Can a DIY enthusiast fix the P1184 code on a 2009 Ford Fusion?

While some DIY enthusiasts may be able to address the P1184 code on a 2009 Ford Fusion by following repair guides or tutorials, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper resolution.

7. How much does it cost to repair the OBDII code P1184 on a 2009 Ford Fusion?

The cost of repairing the P1184 code on a 2009 Ford Fusion can vary depending on the underlying issue, the parts needed for replacement, and labor costs. It's advisable to obtain quotes from reputable repair shops for an accurate estimate.

8. Will resetting the OBDII code P1184 on my 2009 Ford Fusion make it go away permanently?

Resetting the P1184 code on a 2009 Ford Fusion may clear the warning temporarily, but if the underlying issue causing the code is not addressed, it is likely to reappear. It's important to diagnose and repair the root cause of the problem.

9. How can I prevent the OBDII code P1184 from reoccurring on my 2009 Ford Fusion?

To prevent the P1184 code from reoccurring on a 2009 Ford Fusion, it's essential to maintain regular engine oil changes, monitor the engine temperature, ensure the cooling system is functioning correctly, and address any issues promptly.

10. Is the OBDII code P1184 a common issue on 2009 Ford Fusion vehicles?

The P1184 code related to Engine Oil Temperature Out Of Self Test Range is not as common as some other OBDII codes, but it can still occur on 2009 Ford Fusion vehicles due to various factors like sensor malfunctions or cooling system problems.