P0116 Chevrolet 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 Chevrolet 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 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 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 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 P0116 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 P0116 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
- P0116 2014 Chevrolet Silverado — Engine Coolant Temperature Sensor Performance
- P0116 2015 Chevrolet Silverado — Engine Coolant Temperature Sensor Performance
- P0116 2016 Chevrolet Silverado — Engine Coolant Temperature Sensor Performance
- P0116 2017 Chevrolet Silverado — Engine Coolant Temperature Sensor Performance
- P0116 2018 Chevrolet Silverado — Engine Coolant Temperature Sensor Performance
Frequently Asked Questions about P0116 Chevrolet Code
What does the OBDII code P0116 mean for my Chevrolet?
The P0116 code indicates that there is a performance issue with the Engine Coolant Temperature (ECT) sensor, which is responsible for monitoring the temperature of the engine coolant.
What are the common symptoms of the P0116 code?
Common symptoms include poor fuel economy, engine overheating, poor engine performance, and the check engine light being illuminated.
What could cause the P0116 code to trigger?
Possible causes include a faulty ECT sensor, wiring issues or short circuits in the sensor circuit, a malfunctioning Engine Control Module (ECM), or coolant leaks affecting the sensor's performance.
How can I troubleshoot a P0116 code?
To troubleshoot, start by inspecting the ECT sensor and its wiring for damage or corrosion. Use a multimeter to test the sensor's resistance and compare it to the manufacturer's specifications.
Is it safe to drive with the P0116 code?
While you can technically drive with the P0116 code, it is not recommended as it may lead to engine overheating or poor performance, which can result in further engine damage.
What are the potential repairs for a P0116 code?
Repairs may include replacing the ECT sensor, fixing any wiring issues, or reprogramming or replacing the ECM if necessary.
How do I clear the P0116 code after repairs?
After fixing the underlying issue, you can clear the code using an OBDII scanner. Alternatively, disconnecting the battery for a short period may also reset the check engine light.
Can low coolant levels affect the P0116 code?
Yes, low coolant levels can lead to inaccurate readings from the ECT sensor, potentially triggering the P0116 code.
What is the average cost to fix a P0116 code?
The cost can vary widely, but expect to pay between $100 to $300, depending on whether you need to replace the ECT sensor, repair wiring, or address other related issues.
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