P0116 2018 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 2018 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.
Code P0116 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 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 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 P0116 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 P0116 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 P0116 2018 Chevrolet Silverado Code
1. What does the OBDII code P0116 mean on a 2018 Chevrolet Silverado?
P0116 indicates a performance issue with the Engine Coolant Temperature (ECT) sensor, which is detecting an irregular or implausible temperature reading.
2. What are the symptoms of code P0116 in a 2018 Chevrolet Silverado?
Common symptoms include poor fuel economy, extended cranking during startup, engine overheating, rough idling, or the check engine light turning on.
3. What causes the P0116 code in a 2018 Chevrolet Silverado?
Causes may include a faulty ECT sensor, damaged wiring or connectors, a stuck thermostat, low coolant levels, or a malfunctioning engine control module (ECM).
4. Can I drive my 2018 Chevrolet Silverado with the P0116 code?
While driving with this code is possible, it is not recommended, as it may lead to poor engine performance, potential overheating, or further damage.
5. How do I fix the P0116 code on a 2018 Chevrolet Silverado?
Common repairs include replacing the ECT sensor, inspecting and repairing wiring or connectors, testing and replacing the thermostat, or refilling coolant if levels are low.
6. How do I test the Engine Coolant Temperature (ECT) sensor on a 2018 Chevrolet Silverado?
Use a multimeter to measure the sensor's resistance at different temperatures. Compare the readings to manufacturer specifications to identify any inconsistencies.
7. Can low coolant cause the P0116 code in a 2018 Chevrolet Silverado?
Yes, low coolant levels can cause irregular temperature readings, triggering the P0116 code.
8. Where is the Engine Coolant Temperature (ECT) sensor located on a 2018 Chevrolet Silverado?
The ECT sensor is typically located near the thermostat housing on the engine block.
9. How much does it cost to repair a P0116 code on a 2018 Chevrolet Silverado?
Repair costs vary but generally range from $50 to $200, depending on whether the ECT sensor, thermostat, or wiring requires replacement.
10. Can a faulty thermostat trigger the P0116 code in a 2018 Chevrolet Silverado?
Yes, a stuck-open or stuck-closed thermostat can prevent the engine from reaching proper operating temperature and cause the P0116 code.
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