P1117 2002 Ford F150 Code - Engine Coolant Temperature Sensor Intermittent
Quick Answer
The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. Common causes include Low Engine Coolant Level, Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature (ECT) sensor harness is open or shorted. 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 Low Engine Coolant Level, Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature (ECT) sensor harness is open or shorted.
- 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 P1117 2002 Ford F150 Description
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor (pull-up resister) in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The ECT measures the temperature of the engine coolant. The PCM uses the ECT input for fuel control and for cooling fan control. There are 3 types of ECT sensors; threaded, push-in, and twist-lock. The ECT sensor is located in an engine coolant passage.
What are the Possible Causes of the DTC P1117 2002 Ford F150?
- Low Engine Coolant Level
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
- Faulty Engine Coolant Thermostat
- Damaged Powertrain Control Module (PCM)
How to Fix the DTC P1117 2002 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1117 2002 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 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.
Discuss the causes and fixes for P1117 2002 Ford F150 OBDII Code
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