AutoCodes – Chevrolet – P0116 2017 Chevrolet Silverado

P0116 2017 Chevrolet Silverado Code - Engine Coolant Temperature Sensor Performance

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: P0116 2017 Chevrolet Silverado indicates Engine Coolant Temperature Sensor Performance.
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.

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Code Popularity 313

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0116 2017 Chevrolet Silverado Description

The Engine Coolant Temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The Engine Control Module (ECM) supplies 5 V to the ECT sensor signal circuit and a ground for the low reference circuit.
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 temperature difference at power-up that indicates that the ECT sensor is 30° C (86° F) warmer than the IAT sensor for less than 1 s.

OBDII Code P0116 2017 Chevrolet Silverado - Engine Coolant Temperature Sensor Performance - AutoCodes.com — P0116 2017 Chevrolet Silverado Code - Engine Coolant Temperature Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P0116 2017 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 P0116 2017 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 P0116 2017 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.

Need more information about the P0116 2017 Chevrolet Silverado code?

Need more information on how to fix the P0116 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0116 2017 Chevrolet Silverado Code

1. What does the OBDII code P0116 mean for a 2017 Chevrolet Silverado?

P0116 indicates a performance issue with the Engine Coolant Temperature (ECT) sensor, meaning the sensor is reporting inconsistent or implausible temperature readings.

2. What are the common symptoms of code P0116?

Symptoms may include the check engine light turning on, poor fuel efficiency, engine overheating, hard starting, or erratic engine performance.

3. What causes the P0116 code to appear?

The code can be triggered by a faulty ECT sensor, wiring or connector issues, a stuck thermostat, low coolant levels, or a malfunctioning engine control module (ECM).

4. How do I diagnose the P0116 code on my Silverado?

Inspect the ECT sensor and its wiring for damage, check coolant levels, verify thermostat operation, and use an OBDII scanner to monitor live temperature data for inconsistencies.

5. Can I drive my 2017 Silverado with a P0116 code?

It is not recommended, as the issue may cause engine overheating or poor performance, leading to further damage if not addressed promptly.

6. How do I fix the P0116 code?

Repairs may include replacing the ECT sensor, fixing damaged wiring, ensuring proper coolant levels, or replacing a stuck thermostat.

7. How much does it cost to fix the P0116 code?

The cost can range from $50 to $200 for parts and labor, depending on whether the ECT sensor or thermostat needs replacement.

8. What tools are needed to repair a P0116 issue?

You may need an OBDII scanner, a multimeter for electrical testing, basic hand tools, and potentially a coolant system pressure tester.

9. Can low coolant cause the P0116 code?

Yes, low coolant can result in inaccurate temperature readings and trigger the P0116 code.

10. How often should the ECT sensor be replaced to prevent P0116?

The ECT sensor doesnâ€™t have a regular replacement interval but should be inspected if the engine exhibits symptoms or the check engine light comes on.