AutoCodes – Ford – P1184 Ford

P1184 Ford 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 Ford 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 43,067

How popular is this code, among other codes? Medium

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 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1184 Ford 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 Ford - Engine Oil Temperature Out Of Self Test Range - AutoCodes.com — P1184 Ford Code - Engine Oil Temperature Out Of Self Test Range

What does this mean?

What are the Possible Causes of the DTC P1184 Ford?

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 Ford?

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 Ford 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 Ford code?

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Information for Specific Ford Models

P1184 1997 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 1998 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 1999 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 2000 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 2001 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 2002 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 2003 Ford F150 — Engine Oil Temperature Out Of Self Test Range
P1184 2006 Ford Fusion — Engine Oil Temperature Out Of Self Test Range
P1184 2007 Ford Fusion — Engine Oil Temperature Out Of Self Test Range
P1184 2008 Ford Fusion — Engine Oil Temperature Out Of Self Test Range
P1184 2009 Ford Fusion — Engine Oil Temperature Out Of Self Test Range
P1184 2010 Ford Fusion — Engine Oil Temperature Out Of Self Test Range
P1184 2011 Ford Fusion — Engine Oil Temperature Out Of Self Test Range
P1184 2012 Ford Fusion — Engine Oil Temperature Out Of Self Test Range

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.