P0116 2017 GMC Sierra 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 GMC Sierra 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.
Code P0116 2017 GMC Sierra 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 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.
What are the Possible Causes of the DTC P0116 2017 GMC Sierra?
- 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 GMC Sierra?
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 GMC Sierra 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 GMC Sierra code?
Need more information on how to fix the P0116 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0116 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0116 2017 GMC Sierra Code
1. What does the OBDII code P0116 mean for a 2017 GMC Sierra?
P0116 indicates a problem with the Engine Coolant Temperature (ECT) sensor, specifically that its performance is out of the expected range during operation.
2. What are common symptoms of the P0116 code on a 2017 GMC Sierra?
Symptoms may include poor fuel efficiency, engine overheating or running too cool, difficulty starting, or the check engine light being illuminated.
3. What causes the P0116 code on a GMC Sierra?
Common causes include a faulty ECT sensor, wiring issues, corroded connectors, a stuck thermostat, or low coolant levels.
4. Can I drive my 2017 GMC Sierra with a P0116 code?
Driving with a P0116 code is not recommended, as it can lead to engine performance issues, overheating, or potential damage if the root cause isn’t addressed.
5. How do I fix the P0116 code on my GMC Sierra?
Repairs may involve replacing the ECT sensor, repairing damaged wiring, cleaning corroded connectors, refilling low coolant, or replacing a faulty thermostat.
6. How can I diagnose the P0116 code on a 2017 GMC Sierra?
Use an OBDII scanner to confirm the code, inspect the ECT sensor and wiring, check the thermostat operation, and ensure the coolant level is adequate.
7. Where is the ECT sensor located on a 2017 GMC Sierra?
The ECT sensor is typically located near the engine thermostat housing, where the coolant temperature is monitored.
8. How much does it cost to repair a P0116 code on a GMC Sierra?
Repair costs vary but generally range from $50 to $200 for parts and labor, depending on whether the ECT sensor, thermostat, or wiring needs replacement.
9. What happens if I ignore the P0116 code on my GMC Sierra?
Ignoring the code can result in poor engine performance, increased fuel consumption, overheating, or long-term engine damage.
10. Can low coolant cause a P0116 code on a 2017 GMC Sierra?
Yes, low coolant levels can cause inaccurate temperature readings, triggering the P0116 code. Always ensure the coolant is at the proper level.
Discuss the causes and fixes for P0116 2017 GMC Sierra OBDII Code
Code P0116 2017 GMC Sierra 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.
