P0117 2009 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 2009 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 2009 Ford Fusion Description
What are the Possible Causes of the DTC P0117 2009 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 2009 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 2009 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 2009 Ford Fusion Code
1. What are the common symptoms of OBDII code P0117 in a 2009 Ford Fusion?
- Common symptoms include issues with the engine temperature gauge, poor fuel economy, rough idling, and difficulty starting the engine.
2. What does the OBDII code P0117 on a 2009 Ford Fusion indicate?
- This code indicates a problem with the Engine Coolant Temperature (ECT) sensor circuit, specifically that the sensor is reading a low voltage.
3. What are the possible causes of the Engine Coolant Temperature Sensor Circuit Low in a 2009 Ford Fusion?
- Potential causes include a faulty ECT sensor, damaged wiring or connectors in the ECT circuit, a malfunctioning thermostat, or low coolant levels.
4. How can I diagnose the cause of OBDII code P0117 in my 2009 Ford Fusion?
- You can use a multimeter to test the ECT sensor for proper voltage readings, visually inspect the wiring and connectors for damage, and check the coolant levels and thermostat operation.
5. Can I continue driving my 2009 Ford Fusion with OBDII code P0117?
- It is not recommended to drive with this code unresolved, as it can lead to poor engine performance, potential overheating issues, and increased fuel consumption.
6. How can I repair OBDII code P0117 in my 2009 Ford Fusion?
- Repair steps may include replacing the Engine Coolant Temperature sensor, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, and checking the thermostat.
7. Will resetting the OBDII code P0117 in my 2009 Ford Fusion make it go away?
- Simply resetting the code will not fix the underlying issue causing P0117. It is important to diagnose and repair the root cause of the problem to prevent the code from reoccurring.
8. Can a DIY enthusiast fix OBDII code P0117 in a 2009 Ford Fusion?
- Depending on your skill level and access to tools, you may be able to address this issue yourself by following repair guides and being cautious when working with electrical components.
9. How much does it cost to repair OBDII code P0117 in a 2009 Ford Fusion at a mechanic?
- The cost of repairs can vary based on the specific cause of the issue, but it may range from $100 to $300 for parts and labor, excluding diagnostic fees.
10. Is it necessary to recheck the OBDII system after repairing code P0117 in a 2009 Ford Fusion?
- It is recommended to clear the code after repairs and monitor the system for a few drive cycles to ensure the issue has been successfully resolved.
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