P0117 Chevrolet Code - Engine Coolant Temperature Circuit Low Input
Quick Answer
The Engine Coolant Temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) 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 Chevrolet indicates Engine Coolant Temperature Circuit Low Input.
- Common causes
- Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) 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 Chevrolet Description
The ECM uses this high side coolant rationality diagnostic to determine if the input from the ECT sensor is skewed warmer than normal. The internal clock of the ECM will record the amount of time the ignition is OFF. If the calibrated ignition OFF time is met at start-up, the ECM will compare the temperature difference between the ECT and the intake air temperature (IAT) to determine if the temperatures are within an acceptable operating range of each other. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a the ECT is warmer than 139°C (282°F) for greater than 5 s.
What are the Possible Causes of the DTC P0117 Chevrolet?
- Low engine coolant level
- Leaking or stuck open thermostat
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature sensor harness is open or shorted
- Engine Coolant Temperature sensor electrical circuit poor connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0117 Chevrolet?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0117 Chevrolet 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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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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