P1117 Code - Engine Coolant Temperature Sensor Intermittent
Quick Answer
The P1117 code indicates that there is an intermittent issue with the engine coolant temperature sensor. Common causes include Faulty engine coolant temperature sensor, Loose or corroded electrical connections to the sensor, Wiring harness issues. 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 indicates Engine Coolant Temperature Sensor Intermittent.
- Common causes
- Common causes include Faulty engine coolant temperature sensor, Loose or corroded electrical connections to the sensor, Wiring harness issues.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1117 Description
The P1117 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 providing this information to the engine control module. The engine control module uses this data to adjust fuel delivery and ignition timing to optimize engine performance and fuel efficiency. An intermittent problem with this sensor can lead to inaccurate temperature readings, which can negatively impact the vehicle's performance and fuel efficiency.
Common Causes of P1117
- Faulty engine coolant temperature sensor.
- Loose or corroded electrical connections to the sensor.
- Wiring harness issues.
- Coolant leaks affecting sensor readings.
- Engine cooling system problems.
Symptoms of P1117
- Check engine light is illuminated on the dashboard.
- Inaccurate temperature gauge readings on the dashboard.
- Engine overheating or running hotter than normal.
- Poor fuel efficiency.
- Rough idling or stalling.
How to Fix P1117
- Begin by diagnosing the issue using a scan tool to confirm the P1117 code and pinpoint the exact cause.
- Inspect the engine coolant temperature sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
- Check the electrical connections to the sensor and repair any loose or corroded connections.
- Perform a thorough inspection of the engine cooling system to ensure there are no leaks or other issues affecting the sensor readings.
- Clear the trouble code from the engine control module's memory and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1117
The cost of repairing a P1117 code can vary depending on the underlying cause of the issue. In general, replacing the engine coolant temperature sensor can cost between $50 to $150, while repairing wiring or electrical connections may add to the total cost. Labor costs can range from $80 to $150 per hour, and additional charges may apply for diagnostic time and any necessary parts. It's recommended to consult with a certified mechanic or auto repair shop for a more accurate estimate based on your specific vehicle and location.
Need more information about the P1117 code?
Need more information on how to fix the P1117 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1117 code diagnosed by a professional: Find a repair shop in your area
Code P1117 Information for Specific Makes
- P1117 Audi — HO2S Sensor Heater Circuit Short To Ground Bank 1 Sensor 2
- P1117 BMW — Mass Or Volume Air Flow Circuit Low Input Bank 2
- P1117 Buick — Engine Coolant Temperature Signal Out-Of-Range Low
- P1117 Cadillac — Engine Coolant Temperature Signal Out-Of-Range Low
- P1117 Chevrolet — Engine Coolant Temperature Signal Out-Of-Range Low
- P1117 Ford — Engine Coolant Temperature Sensor Intermittent
- P1117 GMC — Engine Coolant Temperature Signal Out-Of-Range Low
- P1117 KIA — HO2S Circuit Low Voltage Bank 1 Sensor 2
- P1117 Land Rover — Thermostat Monitoring Sensor Short Circuit To Ground
- P1117 Lexus — Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
- P1117 Lincoln — Engine Coolant Temperature Sensor Intermittent
- P1117 Mazda — Engine Coolant Temperature Sensor Intermittent
- P1117 Mercury — Engine Coolant Temperature Sensor Intermittent
- P1117 MINI — Mass Or Volume Air Flow Circuit Low Input Bank 2
- P1117 Scion — Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
- P1117 Toyota — Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
- P1117 Volkswagen — HO2S Sensor Heater Circuit Short To Ground Bank 1 Sensor 2
Frequently Asked Questions about P1117 Code
1. What are the common symptoms of OBDII code P1117 (Engine Coolant Temperature Sensor Intermittent)?
- Common symptoms include issues with engine performance, such as rough idling, poor fuel efficiency, and potential overheating.
2. What are the possible causes of an intermittent Engine Coolant Temperature Sensor issue (P1117)?
- Causes can include a faulty temperature sensor, damaged wiring or connectors, a loose sensor connection, or a malfunction in the sensor circuit.
3. How can I diagnose the source of an intermittent Engine Coolant Temperature Sensor problem?
- Use a multimeter to test the sensor's resistance, check the wiring and connectors for damage, and ensure the sensor is securely connected.
4. Can a faulty Engine Coolant Temperature Sensor (P1117) cause other problems in the vehicle?
- Yes, a malfunctioning sensor can affect the engine's fuel mixture, ignition timing, and overall performance, leading to additional issues.
5. What are the potential risks of driving with a P1117 code related to the Engine Coolant Temperature Sensor?
- Driving with a faulty coolant temperature sensor can lead to engine overheating, increased emissions, poor fuel economy, and potential damage to engine components.
6. Is it possible to reset the OBDII code P1117 (Engine Coolant Temperature Sensor Intermittent) without fixing the underlying issue?
- Resetting the code without addressing the root cause will not resolve the problem and the Check Engine Light is likely to reappear once the issue persists.
7. How much does it typically cost to repair or replace a faulty Engine Coolant Temperature Sensor causing the P1117 code?
- The cost can vary depending on the vehicle make and model, but generally, the replacement of the sensor can range from $50 to $200 including parts and labor.
8. Can a DIY enthusiast fix the intermittent Engine Coolant Temperature Sensor issue associated with code P1117?
- Yes, if you have some experience with automotive repairs and the necessary tools, replacing the coolant temperature sensor can be a manageable DIY task.
9. Are there any preventative measures that can help avoid intermittent Engine Coolant Temperature Sensor problems leading to the P1117 code?
- Regularly inspecting the sensor and its connections, maintaining proper coolant levels, and addressing any cooling system issues promptly can help prevent sensor malfunctions.
10. How long can I safely drive with an intermittent Engine Coolant Temperature Sensor issue triggering the P1117 code?
- It's best to address the issue as soon as possible to prevent potential engine damage or decreased performance. Avoid prolonged driving with unresolved sensor problems.
Discuss the causes and fixes for P1117 OBDII Code
Code P1117 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.