P0117 Chevrolet Code - Engine Coolant Temperature Circuit Low Input
Quick Answer
The P0117 Chevrolet code indicates that there is an issue with the Engine Coolant Temperature (ECT) sensor circuit, specifically that the input voltage is lower than the normal operating range. Common causes include Faulty ECT sensor: The most common cause of the P0117 code is a malfunctioning ECT sensor that is sending incorrect voltage readings to the ECM, Wiring issues: Damaged or corroded wiring connecting the ECT sensor to the ECM can disrupt the signal and trigger the code, Coolant leaks: Low coolant levels or coolant leaks can impact the ECT sensor's ability to accurately measure the engine's temperature. 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 Chevrolet indicates Engine Coolant Temperature Circuit Low Input.
- Common causes
- Common causes include Faulty ECT sensor: The most common cause of the P0117 code is a malfunctioning ECT sensor that is sending incorrect voltage readings to the ECM, Wiring issues: Damaged or corroded wiring connecting the ECT sensor to the ECM can disrupt the signal and trigger the code, Coolant leaks: Low coolant levels or coolant leaks can impact the ECT sensor's ability to accurately measure the engine's temperature.
- 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.
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Code P0117 Chevrolet Description
The P0117 Chevrolet code indicates that there is an issue with the Engine Coolant Temperature (ECT) sensor circuit, specifically that the input voltage is lower than the normal operating range. The ECT sensor is responsible for monitoring the temperature of the engine coolant, which is crucial for the engine's performance and efficiency. When the ECT sensor detects a low input voltage, it can lead to various problems within the vehicle's systems.
Common Causes of P0117 Chevrolet
- Faulty ECT sensor: The most common cause of the P0117 code is a malfunctioning ECT sensor that is sending incorrect voltage readings to the ECM.
- Wiring issues: Damaged or corroded wiring connecting the ECT sensor to the ECM can disrupt the signal and trigger the code.
- Coolant leaks: Low coolant levels or coolant leaks can impact the ECT sensor's ability to accurately measure the engine's temperature.
- ECM malfunction: In rare cases, a malfunctioning ECM can also cause the P0117 code by misinterpreting the ECT sensor's input.
Symptoms of P0117 Chevrolet
- Check Engine Light: The most common symptom associated with the P0117 code is the illumination of the Check Engine Light on the vehicle's dashboard.
- Engine overheating: A malfunctioning ECT sensor can cause inaccurate temperature readings, leading to engine overheating if not corrected.
- Poor fuel economy: Incorrect temperature readings can cause the ECM to adjust fuel delivery improperly, resulting in decreased fuel efficiency.
- Rough idling: The engine may experience rough idling or stalling due to incorrect temperature readings affecting fuel delivery and ignition timing.
How to Fix P0117 Chevrolet
- Diagnose the issue: Use a scan tool to read the code and verify the low input voltage from the ECT sensor.
- Inspect ECT sensor: Check the ECT sensor for any signs of damage or corrosion and replace it if necessary.
- Check wiring: Inspect the wiring connecting the ECT sensor to the ECM for any damage or loose connections.
- Repair coolant leaks: If coolant leaks are present, address them promptly to ensure the ECT sensor can accurately measure the engine's temperature.
- Clear the code: After making the necessary repairs, clear the code using a scan tool to reset the Check Engine Light.
Cost to Fix P0117 Chevrolet
The typical repair costs for addressing the P0117 code can vary depending on the specific cause of the issue. In general, replacing a faulty ECT sensor can cost between $50 and $200, including parts and labor. If wiring repairs or coolant leak fixes are needed, additional costs may apply. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. In general, auto repair shops commonly charge between $80 and $150 per hour for labor.
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Information for Specific Chevrolet Models
- P0117 2014 Chevrolet Silverado — Engine Coolant Temperature Circuit Low Input
- P0117 2015 Chevrolet Silverado — Engine Coolant Temperature Circuit Low Input
- P0117 2016 Chevrolet Silverado — Engine Coolant Temperature Circuit Low Input
- P0117 2017 Chevrolet Silverado — Engine Coolant Temperature Circuit Low Input
- P0117 2018 Chevrolet Silverado — Engine Coolant Temperature Circuit Low Input
Frequently Asked Questions about P0117 Chevrolet Code
1. What are common symptoms of OBDII code P0117 in a Chevrolet?
- Common symptoms include temperature gauge reading lower than normal, engine overheating, poor fuel economy, and potential difficulties starting the vehicle.
2. What causes the OBDII code P0117 in a Chevrolet?
- The code is typically triggered by a faulty engine coolant temperature sensor, corroded wiring or connectors, low coolant levels, or a malfunctioning thermostat.
3. How can I diagnose the cause of OBDII code P0117 in my Chevrolet?
- Use a multimeter to test the engine coolant temperature sensor, inspect the wiring and connectors for damage, check coolant levels, and confirm proper thermostat operation.
4. Can a bad thermostat cause OBDII code P0117 in a Chevrolet?
- Yes, a malfunctioning thermostat can cause inaccurate temperature readings and trigger the P0117 code due to the coolant temperature not reaching the expected level.
5. How do I repair OBDII code P0117 in my Chevrolet?
- Repair options include replacing the engine coolant temperature sensor, repairing or replacing damaged wiring, ensuring proper coolant levels, and replacing a faulty thermostat if necessary.
6. Is it safe to drive with OBDII code P0117 in a Chevrolet?
- It is not recommended to drive with the P0117 code as it can lead to engine overheating and potential damage if left unresolved.
7. How much does it typically cost to repair OBDII code P0117 in a Chevrolet?
- The cost of repair can vary depending on the specific cause, but it may range from $100 to $300 for parts and labor.
8. Can I reset OBDII code P0117 in a Chevrolet without fixing the issue?
- While you can clear the code with an OBDII scanner, it is not advisable as the underlying problem will persist and may lead to further issues down the line.
9. Will OBDII code P0117 cause my Chevrolet to fail an emissions test?
- Yes, the P0117 code can cause your Chevrolet to fail an emissions test as it indicates a problem with the engine coolant temperature circuit.
10. How often does OBDII code P0117 occur in Chevrolet vehicles?
- OBDII code P0117 related to Engine Coolant Temperature Circuit Low Input is a relatively common issue in Chevrolet vehicles, especially in older models or vehicles with high mileage.
Discuss the causes and fixes for P0117 Chevrolet OBDII Code
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The P0117 code means that there is problem with the Engine Coolant Temperature (ECT) sensor. Yes, the Engine Coolant Temperature sensor could cause the engine to run poorly.
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My temp gauge shoot to 150 then to 250 then back to 198 randomly I'm getting po117 code I replaced temp sensor still have the same problem
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How is the coolant level? You may have a faulty thermostat that is getting stuck at times. I recommend performing an engine coolant service and change the thermostat.
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