P1184 2003 Ford F150 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 2003 Ford F150 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.
Code P1184 2003 Ford F150 Description
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.
What are the Possible Causes of the DTC P1184 2003 Ford F150?
- 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 2003 Ford F150?
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 2003 Ford F150 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.
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Frequently Asked Questions about P1184 2003 Ford F150 Code
1. What does the OBDII code P1184 mean on a 2003 Ford F150?
The P1184 code indicates that the Engine Oil Temperature (EOT) sensor is reporting a value outside the expected range during a self-test.
2. What are common symptoms of the P1184 code?
Common symptoms include the Check Engine Light turning on, erratic oil temperature readings, and possible engine performance issues.
3. What causes the P1184 code to appear?
Causes may include a faulty EOT sensor, damaged wiring or connectors, incorrect oil type or level, or a malfunctioning Powertrain Control Module (PCM).
4. Can I drive my 2003 Ford F150 with the P1184 code?
While the truck may still be drivable, ignoring this code could lead to improper engine operation or potential damage due to unmonitored oil temperature.
5. How can I fix the P1184 code on my Ford F150?
First, inspect and repair any damaged wiring or connectors. If the issue persists, replace the EOT sensor and ensure the oil level and type are correct.
6. Where is the Engine Oil Temperature (EOT) sensor located on a 2003 Ford F150?
The EOT sensor is typically located near the oil filter or in the engine block, depending on the engine configuration.
7. What tools are needed to diagnose the P1184 code?
You’ll need an OBDII scanner, a multimeter for testing the sensor and wiring, and basic hand tools for replacement.
8. How much does it cost to repair the P1184 code?
Repair costs vary but typically range from $50 to $150 for a sensor replacement, including parts and labor.
9. Can low or dirty engine oil trigger the P1184 code?
Yes, low or dirty oil can cause inaccurate temperature readings, potentially triggering the P1184 code.
10. How do I prevent the P1184 code from returning?
Regular oil changes, using the correct oil type, and inspecting the EOT sensor and wiring during routine maintenance can help prevent this code.
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