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P1116 2003 Ford F150 Code - Engine Coolant Temperature Sensor Out of Self-Test Range

Quick Answer

The P1116 code for a 2003 Ford F150 indicates that the Engine Coolant Temperature (ECT) sensor is out of self-test range. Common causes include Faulty ECT sensor, Wiring or connector issues in the ECT sensor circuit, Coolant level too low. 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
P1116 2003 Ford F150 indicates Engine Coolant Temperature Sensor Out of Self-Test Range.
Common causes
Common causes include Faulty ECT sensor, Wiring or connector issues in the ECT sensor circuit, Coolant level too low.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P1116 2003 Ford F150 Description

The P1116 code for a 2003 Ford F150 indicates that the Engine Coolant Temperature (ECT) sensor is out of self-test range. The ECT sensor is a crucial component of the vehicle's engine management system, as it measures the temperature of the engine coolant. This information is used by the engine control module (ECM) to adjust fuel delivery and ignition timing for optimal performance and efficiency. When the ECT sensor is out of self-test range, it means that the sensor's readings are not within the expected parameters set by the ECM during the self-test process.

OBDII Code P1116 2003 Ford F150 - Engine Coolant Temperature Sensor Out of Self-Test Range
P1116 2003 Ford F150 Code - Engine Coolant Temperature Sensor Out of Self-Test Range

Common Causes of P1116 2003 Ford F150

  1. Faulty ECT sensor
  2. Wiring or connector issues in the ECT sensor circuit
  3. Coolant level too low
  4. Air pockets in the cooling system
  5. ECM software issue

Symptoms of P1116 2003 Ford F150

  1. Check Engine Light illuminated
  2. Engine running rough or misfiring
  3. Decreased fuel efficiency
  4. Engine overheating
  5. Difficulty starting the engine

How to Fix P1116 2003 Ford F150

  1. Begin by diagnosing the ECT sensor using a scan tool to verify the code and check the sensor's readings.
  2. Inspect the wiring and connectors of the ECT sensor for any damage or corrosion. Repair or replace as necessary.
  3. Check the coolant level and top off if low. Bleed the cooling system to remove any air pockets.
  4. If the ECT sensor is faulty, replace it with a new sensor following the manufacturer's guidelines.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1116 2003 Ford F150

The cost of repairing a P1116 code on a 2003 Ford F150 can vary depending on the specific cause of the issue. In general, the cost of replacing an ECT sensor ranges from $50 to $150, while the labor cost for the repair can range from $80 to $150 per hour. Additional costs may include diagnostic fees, coolant, and any other necessary parts. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for P1116 2003 Ford F150

Start by checking for coolant leaks, if there are not leaks the thermostat might be stuck open or closed and may need to be replaced, you still have an issue the engine coolant temp sensor or cylinder head temp sensor. The engine coolant temperature must be greater than 10°C (50°F) to pass the key ON engine OFF (KOEO) self-test and greater than 82°C (180°F) to pass the key ON engine running (KOER) self-test.

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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 P1116 2003 Ford F150 Code

1. What are the common symptoms of OBDII code P1116 on a 2003 Ford F150?

The common symptoms of code P1116 include issues with the engine's cooling system, such as overheating, erratic temperature readings, and potential loss of power.

2. What does the OBDII code P1116 indicate on a 2003 Ford F150?

Code P1116 indicates that the engine coolant temperature sensor is out of self-test range, signaling a potential malfunction or incorrect readings from the sensor.

3. What are the possible causes of OBDII code P1116 on a 2003 Ford F150?

Possible causes of code P1116 include a faulty engine coolant temperature sensor, wiring or connector issues, a malfunctioning cooling system, or a problem with the engine control module (ECM).

4. How can I diagnose the cause of OBDII code P1116 on my 2003 Ford F150?

Diagnosing code P1116 may involve using a scan tool to check for the exact temperature readings from the coolant sensor, inspecting the sensor and its wiring for damage, and testing the cooling system for proper operation.

5. Can I continue driving my 2003 Ford F150 with OBDII code P1116?

It is not recommended to drive your vehicle with code P1116 as it can lead to potential engine overheating and other serious issues. It's best to address the problem promptly to prevent further damage.

6. How can I repair OBDII code P1116 on a 2003 Ford F150?

Repairing code P1116 may involve replacing the engine coolant temperature sensor, repairing any damaged wiring or connectors, ensuring the cooling system is functioning properly, and clearing the code with a scan tool.

7. Will resetting the OBDII code P1116 on a 2003 Ford F150 fix the issue?

Simply resetting the code without addressing the underlying problem will not fix the issue. It's important to diagnose and repair the root cause of code P1116 to prevent it from reoccurring.

8. Can a DIY enthusiast fix OBDII code P1116 on a 2003 Ford F150?

Depending on your skill level and access to tools, a DIY enthusiast may be able to address code P1116 by following proper diagnostic procedures and replacing the faulty components. However, professional assistance is recommended if unsure.

9. How much does it cost to repair OBDII code P1116 on a 2003 Ford F150?

The cost of repairing code P1116 can vary depending on the cause of the issue, labor rates, and the cost of replacement parts. It's advisable to obtain quotes from auto repair shops for an accurate estimate.

10. Can OBDII code P1116 on a 2003 Ford F150 cause permanent damage if left unresolved?

Ignoring code P1116 can potentially lead to engine overheating, poor performance, and other serious issues that may result in permanent damage to the engine. It's crucial to address the problem promptly to prevent further damage.

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