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P1117 Ford Code - Engine Coolant Temperature Sensor Intermittent

Quick Answer

The P1117 Ford code indicates that there is an intermittent issue with the engine coolant temperature sensor. Common causes include Faulty engine coolant temperature sensor, Wiring or connector issues, Corrosion or buildup on sensor contacts. 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
P1117 Ford indicates Engine Coolant Temperature Sensor Intermittent.
Common causes
Common causes include Faulty engine coolant temperature sensor, Wiring or connector issues, Corrosion or buildup on sensor contacts.
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 Aug 19, 2024
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Code P1117 Ford Description

The P1117 Ford code indicates that there is an intermittent issue with the engine coolant temperature sensor. This sensor is responsible for monitoring the temperature of the engine coolant and sending this information to the engine control module. When the sensor detects a problem, it can cause various issues with the vehicle's performance, fuel efficiency, and emissions control system. An intermittent fault with this sensor can lead to inaccurate temperature readings, which can result in incorrect fuel mixture adjustments and potential engine overheating.

OBDII Code P1117 Ford - Engine Coolant Temperature Sensor Intermittent
P1117 Ford Code - Engine Coolant Temperature Sensor Intermittent

Common Causes of P1117 Ford

  1. Faulty engine coolant temperature sensor
  2. Wiring or connector issues
  3. Corrosion or buildup on sensor contacts
  4. Cooling system problems (e.g., low coolant level)
  5. Engine computer (PCM) malfunction

Symptoms of P1117 Ford

  1. Fluctuating temperature gauge readings
  2. Engine overheating
  3. Poor fuel efficiency
  4. Check Engine Light illuminated
  5. Rough idling or stalling

How to Fix P1117 Ford

  1. Diagnose the issue by checking the sensor's resistance and voltage output
  2. Inspect wiring and connectors for any damage or corrosion
  3. Replace the engine coolant temperature sensor if faulty
  4. Clear the trouble codes and reset the engine control module
  5. Test drive the vehicle to ensure the issue has been resolved

Cost to Fix P1117 Ford

The typical repair cost for addressing an engine coolant temperature sensor intermittent issue can range from $100 to $300, including parts and labor. However, the actual cost may vary depending on the specific make and model of the vehicle, the location of the repair shop, and the extent of the problem. It is recommended to consult with a qualified mechanic to get an accurate estimate for your particular situation.

What does this mean?

Tech Notes for P1117 Ford

Monitor the ECT on a scan tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped.

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Information for Specific Ford Models

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 P1117 Ford Code

1. What are the common symptoms of OBDII code P1117 in a Ford related to the Engine Coolant Temperature Sensor Intermittent issue?

The common symptoms include erratic temperature readings on the dashboard, engine overheating, poor fuel economy, and potential stalling or rough idling.

2. What are the possible causes of the OBDII code P1117 in a Ford indicating an Engine Coolant Temperature Sensor Intermittent problem?

Potential causes may include a faulty coolant temperature sensor, issues with the sensor wiring or connectors, a problem with the engine control module (ECM), or a low coolant level.

3. How can I diagnose the Engine Coolant Temperature Sensor Intermittent issue triggering the P1117 code on my Ford?

You can diagnose the problem by using an OBDII scanner to read the code, checking the coolant temperature sensor for proper functioning, inspecting wiring and connectors for damage, and testing the ECM for any faults.

4. Is it safe to drive my Ford with the P1117 code related to an Engine Coolant Temperature Sensor Intermittent problem?

It is not recommended to drive the vehicle with this issue as it can lead to potential engine damage due to inaccurate temperature readings and improper fuel mixture.

5. What are the repair options for fixing the Engine Coolant Temperature Sensor Intermittent problem causing the P1117 code on my Ford?

Repair options include replacing the faulty coolant temperature sensor, repairing or replacing damaged wiring or connectors, resetting the ECM, and ensuring the coolant level is correct.

6. Can a DIY enthusiast fix the Engine Coolant Temperature Sensor Intermittent issue associated with the P1117 code on a Ford?

Depending on your skill level and access to tools, you may be able to replace the coolant temperature sensor or check wiring connections. However, for more complex issues, it is recommended to seek professional help.

7. How much does it typically cost to repair the Engine Coolant Temperature Sensor Intermittent problem triggering the P1117 code in a Ford?

The cost of repairs can vary depending on the specific issue, but replacing a faulty coolant temperature sensor can range from $50 to $200 including parts and labor.

8. Are there any preventative measures to avoid encountering the P1117 code due to Engine Coolant Temperature Sensor Intermittent problems in a Ford?

Regularly checking coolant levels, performing routine maintenance checks, and addressing any cooling system issues promptly can help prevent issues with the coolant temperature sensor.

9. Can a malfunctioning Engine Coolant Temperature Sensor triggering the P1117 code affect the overall performance of a Ford vehicle?

Yes, a malfunctioning sensor can lead to engine performance issues, decreased fuel efficiency, potential overheating, and other related problems that can impact the vehicle's overall performance.

10. How urgent is it to address the Engine Coolant Temperature Sensor Intermittent issue causing the P1117 code in a Ford?

It is important to address this issue promptly to prevent potential engine damage, overheating, and performance issues. Ignoring the problem can lead to costly repairs in the long run.

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