P0117 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P0117 in a 2018 Chevrolet Silverado?
The common symptoms of code P0117 include engine overheating, poor fuel economy, rough idling, and a decrease in engine performance.
2. What does the OBDII code P0117 indicate in a 2018 Chevrolet Silverado?
Code P0117 indicates that the Engine Coolant Temperature (ECT) sensor is reporting a low input signal to the engine control module.
3. What are the potential causes of OBDII code P0117 in a 2018 Chevrolet Silverado?
The potential causes of code P0117 include a faulty ECT sensor, a corroded or damaged wiring harness, a malfunctioning thermostat, or low coolant levels.
4. How can I diagnose OBDII code P0117 in my 2018 Chevrolet Silverado?
To diagnose code P0117, you can use a scan tool to read the ECT sensor data, visually inspect the wiring harness and connector for any visible damage, and test the ECT sensor resistance with a multimeter.
5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P0117?
It is not recommended to drive your vehicle with code P0117 as it can lead to engine damage due to incorrect temperature readings and potential overheating issues.
6. How can I repair OBDII code P0117 in my 2018 Chevrolet Silverado?
To repair code P0117, you may need to replace the ECT sensor, repair or replace any damaged wiring, ensure proper coolant levels, and verify the correct operation of the thermostat.
7. Are there any DIY tips for fixing OBDII code P0117 in a 2018 Chevrolet Silverado?
DIY tips for fixing code P0117 include checking and cleaning the ECT sensor connector, ensuring proper coolant levels, and inspecting the wiring harness for any visible damage.
8. Will resetting the OBDII system clear the P0117 code in my 2018 Chevrolet Silverado?
Resetting the OBDII system may temporarily clear the P0117 code, but if the underlying issue is not addressed, the code is likely to reappear after driving the vehicle for some time.
9. How serious is OBDII code P0117 in a 2018 Chevrolet Silverado?
Code P0117 should be taken seriously as it can lead to engine overheating, poor fuel economy, and potential engine damage if not addressed promptly.
10. Can extreme weather conditions affect the occurrence of OBDII code P0117 in a 2018 Chevrolet Silverado?
Extreme weather conditions, such as very low or high temperatures, can affect the ECT sensor readings and potentially trigger code P0117 in a 2018 Chevrolet Silverado.
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