P0117 2010 Ford Fusion Code - Engine Coolant Temperature Sensor Circuit Low
Quick Answer
The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low engine coolant level, Faulty engine coolant thermostat, Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor. 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
- P0117 2010 Ford Fusion indicates Engine Coolant Temperature Sensor Circuit Low.
- Common causes
- Common causes include Low engine coolant level, Faulty engine coolant thermostat, Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor.
- 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 P0117 2010 Ford Fusion Description
What are the Possible Causes of the DTC P0117 2010 Ford Fusion?
- Low engine coolant level
- Faulty engine coolant thermostat
- Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor
- Engine Coolant Temperature Sensor or Cylinder Head Temperature Sensor harness is open or shorted
- Engine Coolant Temperature Sensor or Cylinder Head Temperature Sensor circuit poor electrical connection
How to Fix the DTC P0117 2010 Ford Fusion?
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 P0117 2010 Ford Fusion 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 P0117 2010 Ford Fusion Code
1. What does OBDII code P0117 mean on a 2010 Ford Fusion?
P0117 indicates that the Engine Coolant Temperature (ECT) sensor circuit is reading a voltage lower than expected, which suggests a potential issue with the sensor or its wiring.
2. What are the symptoms of code P0117 in a 2010 Ford Fusion?
Symptoms may include an illuminated check engine light, poor fuel economy, engine overheating, reduced engine performance, or difficulty starting the vehicle.
3. What causes the P0117 code on a 2010 Ford Fusion?
Common causes include a faulty ECT sensor, damaged or corroded wiring, a loose or disconnected sensor connector, or a malfunctioning engine control module (ECM).
4. Can a bad thermostat trigger the P0117 code on a 2010 Ford Fusion?
While a bad thermostat itself doesn’t directly trigger P0117, it can lead to temperature irregularities that confuse the ECT sensor, potentially causing related issues.
5. How do I fix the P0117 code on my 2010 Ford Fusion?
Start by inspecting the ECT sensor and its wiring for damage or corrosion. Replace the sensor if faulty, repair any damaged wiring, and ensure the connector is securely attached.
6. Can I drive my 2010 Ford Fusion with the P0117 code?
It is not recommended to drive with this code, as it can lead to poor engine performance and potential overheating, which can cause further damage.
7. How do I test the Engine Coolant Temperature (ECT) sensor on a 2010 Ford Fusion?
You can test the ECT sensor with a multimeter by measuring its resistance at different temperatures and comparing the readings to the manufacturer’s specifications.
8. How much does it cost to fix the P0117 code on a 2010 Ford Fusion?
The repair cost varies but typically ranges from $50 to $200, depending on whether you need to replace the ECT sensor or repair wiring.
9. Will clearing the P0117 code fix the problem on a 2010 Ford Fusion?
Clearing the code will turn off the check engine light temporarily, but the issue causing the code will persist until properly diagnosed and repaired.
10. Where is the Engine Coolant Temperature sensor located on a 2010 Ford Fusion?
The ECT sensor is usually located near the thermostat housing, where it monitors the temperature of the engine coolant.
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