Engine-CodesFord – P1117 2002 Ford F150

P1117 2002 Ford F150 Code - Engine Coolant Temperature Sensor Intermittent

Quick Answer

The P1117 diagnostic trouble code (DTC) for a 2002 Ford F150 indicates an intermittent issue with the Engine Coolant Temperature (ECT) sensor. Common causes include Faulty ECT sensor, Damaged wiring or connectors, Corrosion on sensor terminals. 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 2002 Ford F150 indicates Engine Coolant Temperature Sensor Intermittent.
Common causes
Common causes include Faulty ECT sensor, Damaged wiring or connectors, Corrosion on sensor terminals.
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 15, 2024
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Code P1117 2002 Ford F150 Description

The P1117 diagnostic trouble code (DTC) for a 2002 Ford F150 indicates an intermittent issue with the Engine Coolant Temperature (ECT) sensor. The ECT sensor is a crucial component of the vehicle's engine management system, as it measures the temperature of the engine coolant and sends this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing to ensure optimal engine performance and efficiency.

OBDII Code P1117 2002 Ford F150 - Engine Coolant Temperature Sensor Intermittent
P1117 2002 Ford F150 Code - Engine Coolant Temperature Sensor Intermittent

Common Causes of P1117 2002 Ford F150

  1. Faulty ECT sensor
  2. Damaged wiring or connectors
  3. Corrosion on sensor terminals
  4. ECM software issue
  5. Coolant leakage affecting sensor readings

Symptoms of P1117 2002 Ford F150

  1. Check engine light illuminated on the dashboard
  2. Poor fuel economy
  3. Rough idling or stalling
  4. Difficulty starting the engine
  5. Engine overheating

How to Fix P1117 2002 Ford F150

  1. Begin by locating the ECT sensor on the engine (usually near the thermostat housing).
  2. Inspect the wiring and connectors for any damage or corrosion.
  3. Test the ECT sensor using a multimeter to check for proper resistance values.
  4. If the sensor is faulty, replace it with a new OEM or high-quality aftermarket sensor.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1117 2002 Ford F150

The cost of repairing an intermittent ECT sensor on a 2002 Ford F150 can vary depending on the specific cause of the issue and the cost of parts and labor in your area. On average, the cost of a new ECT sensor can range from $20 to $50, while labor costs for diagnosis and replacement can range from $100 to $200. Overall, you can expect to pay anywhere from $120 to $250 for this repair. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your location and vehicle specifics.

Tech Notes for P1117 2002 Ford F150

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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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 2002 Ford F150 Code

What does the OBDII code P1117 mean on a 2002 Ford F150?

The P1117 code indicates an intermittent issue with the Engine Coolant Temperature (ECT) sensor, which monitors engine coolant temperature for proper operation.

What are the common symptoms of the P1117 code?

Symptoms may include the check engine light turning on, poor fuel efficiency, rough idle, hard starting, or erratic temperature gauge readings.

What causes the P1117 code to appear?

Common causes include a faulty ECT sensor, damaged or corroded wiring/connectors, or issues with the vehicle's powertrain control module (PCM).

Can I drive my 2002 Ford F150 with the P1117 code?

While the vehicle may still run, driving with this code can lead to poor engine performance and potential long-term damage due to incorrect temperature readings.

How do I diagnose the P1117 code?

Start by inspecting the ECT sensor, wiring, and connectors for damage or corrosion. Use a multimeter to check the sensor's resistance and verify proper voltage at the sensor connector.

What tools are needed to fix the P1117 code?

You may need an OBDII scanner, multimeter, replacement ECT sensor, and basic hand tools to perform the repair.

How do I fix the P1117 code on my 2002 Ford F150?

Repair typically involves replacing the faulty ECT sensor, repairing damaged wiring, or cleaning corroded connectors. Reset the code with an OBDII scanner after completing repairs.

What happens if I ignore the P1117 code?

Ignoring the code can lead to incorrect engine temperature readings, reduced efficiency, and possible engine overheating or damage over time.

Is the P1117 code related to other issues?

Yes, it can be linked to cooling system problems, such as a failing thermostat or low coolant levels, which should also be checked.

How much does it cost to fix the P1117 code?

Repair costs vary but typically range from $50 to $200, depending on whether only the ECT sensor needs replacement or additional wiring repairs are required.

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