Engine-CodesMercury – P1184 Mercury

P1184 Mercury Code - Engine Oil Temperature Out Of Self Test Range

Quick Answer

The P1184 diagnostic trouble code for Mercury vehicles indicates that the engine oil temperature is out of the self-test range. Common causes include Faulty engine oil temperature sensor, Wiring issues or poor connections in the sensor circuit, Engine oil level or quality issues affecting temperature readings. 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 Mercury indicates Engine Oil Temperature Out Of Self Test Range.
Common causes
Common causes include Faulty engine oil temperature sensor, Wiring issues or poor connections in the sensor circuit, Engine oil level or quality issues affecting temperature readings.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1184 Mercury Description

The P1184 diagnostic trouble code for Mercury vehicles indicates that the engine oil temperature is out of the self-test range. This means that the engine oil temperature sensor is reporting a value that is either too high or too low compared to the expected range during the self-test procedure. The engine oil temperature sensor is a crucial component that provides important data to the vehicle's engine control module (ECM) for proper engine operation.

OBDII Code P1184 Mercury - Engine Oil Temperature Out Of Self Test Range
P1184 Mercury Code - Engine Oil Temperature Out Of Self Test Range

Common Causes of P1184 Mercury

  1. Faulty engine oil temperature sensor
  2. Wiring issues or poor connections in the sensor circuit
  3. Engine oil level or quality issues affecting temperature readings
  4. ECM software or hardware malfunctions
  5. Engine cooling system problems affecting oil temperature

Symptoms of P1184 Mercury

  1. Check engine light illuminated on the dashboard
  2. Engine running rough or misfiring
  3. Decreased fuel efficiency
  4. Engine overheating
  5. Engine stalling or hesitation during acceleration

How to Fix P1184 Mercury

  1. Begin by checking the engine oil level and quality to ensure they meet manufacturer specifications.
  2. Inspect the wiring and connections of the engine oil temperature sensor for any damage or corrosion.
  3. Test the engine oil temperature sensor using a multimeter to determine if it is providing accurate readings.
  4. If the sensor is faulty, replace it with a new one and clear the diagnostic trouble codes from the ECM.
  5. Finally, perform a test drive to ensure that the issue has been resolved and that the engine oil temperature is within the correct range.

Cost to Fix P1184 Mercury

The typical repair costs for addressing a P1184 engine oil temperature out of self-test range code can range from $100 to $300, including parts and labor. However, it is important to note that actual costs can vary depending on the specific diagnosis time and labor rates at auto repair shops. Rates may be higher in metropolitan areas or at dealerships, while independent shops may offer more competitive prices. It is advisable to check with local auto repair shops to get a more accurate estimate for this repair.

When is the Code Detected?

Indicates Engine Oil Temperature (EOT) signal was out of Self-Test range.

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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.

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