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P111E 2017 Chevrolet Silverado Code - Engine Coolant Temperature Sensor Not Plausible

Quick Answer

The P111E diagnostic trouble code (DTC) in a 2017 Chevrolet Silverado indicates that the engine coolant temperature sensor is not providing plausible data to the engine control module (ECM). Common causes include Faulty engine coolant temperature sensor, Wiring or connector issues, Coolant level is low. 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
P111E 2017 Chevrolet Silverado indicates Engine Coolant Temperature Sensor Not Plausible.
Common causes
Common causes include Faulty engine coolant temperature sensor, Wiring or connector issues, Coolant level is low.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P111E 2017 Chevrolet Silverado Description

The P111E diagnostic trouble code (DTC) in a 2017 Chevrolet Silverado indicates that the engine coolant temperature sensor is not providing plausible data to the engine control module (ECM). The engine coolant temperature sensor is a crucial component that measures the temperature of the engine coolant. This information is used by the ECM to adjust fuel delivery, ignition timing, and other crucial parameters to ensure optimal engine performance and efficiency.

OBDII Code P111E 2017 Chevrolet Silverado - Engine Coolant Temperature Sensor Not Plausible
P111E 2017 Chevrolet Silverado Code - Engine Coolant Temperature Sensor Not Plausible

Common Causes of P111E 2017 Chevrolet Silverado

  1. Faulty engine coolant temperature sensor
  2. Wiring or connector issues
  3. Coolant level is low
  4. Coolant is contaminated
  5. ECM software issues

Symptoms of P111E 2017 Chevrolet Silverado

  1. Engine running hotter or colder than usual
  2. Poor fuel economy
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Decreased engine performance

How to Fix P111E 2017 Chevrolet Silverado

  1. Diagnose the issue by using a scan tool to read the fault codes and inspecting the engine coolant temperature sensor, wiring, and connectors.
  2. Check the coolant level and condition. Top up the coolant if needed and flush the system if the coolant is contaminated.
  3. Replace the engine coolant temperature sensor if it is faulty. This may require draining the coolant and removing other components for access.
  4. Clear the fault codes and retest the vehicle to ensure the issue has been resolved.
  5. Perform a test drive to verify that the engine coolant temperature sensor is now providing accurate data to the ECM.

Cost to Fix P111E 2017 Chevrolet Silverado

The typical repair costs for addressing a P111E DTC in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. Replacing the engine coolant temperature sensor itself may cost between $50 and $150, depending on the brand and quality of the sensor. Labor costs can also vary but may range from $100 to $200, considering the time required to diagnose and replace the sensor. Additional costs may apply if coolant needs to be topped up or replaced. As mentioned earlier, it's essential to check local rates for a more accurate estimate.

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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 P111E 2017 Chevrolet Silverado Code

1. What does the OBDII code P111E mean on a 2017 Chevrolet Silverado?

P111E indicates an issue where the Engine Coolant Temperature (ECT) sensor is providing data that is not plausible or outside of the expected range.

2. What are the common symptoms of the P111E code in a 2017 Chevrolet Silverado?

Symptoms may include an illuminated check engine light, erratic temperature gauge readings, poor engine performance, or difficulty starting the engine.

3. What causes the P111E code to appear on a Chevrolet Silverado?

Common causes include a faulty ECT sensor, damaged sensor wiring, corroded electrical connections, or issues with the engine control module (ECM).

4. How do I diagnose the P111E code on my 2017 Chevrolet Silverado?

Start by scanning for codes, inspecting the ECT sensor and wiring for damage or corrosion, checking for proper sensor voltage, and verifying readings with a diagnostic scanner.

5. Can I drive my 2017 Chevrolet Silverado with the P111E code?

Driving with this code is not recommended, as it can cause engine performance issues and lead to potential overheating or other damage.

6. How do I fix the P111E code on a Chevrolet Silverado?

Repairs may include replacing the ECT sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.

7. How much does it cost to fix the P111E code in a 2017 Chevrolet Silverado?

Repair costs can range from $50 to $300 or more, depending on whether the issue is a simple sensor replacement or involves more extensive wiring or ECM repairs.

8. Can a faulty thermostat cause the P111E code on a Chevrolet Silverado?

Yes, a stuck open or closed thermostat can affect coolant temperature readings and potentially trigger the P111E code.

9. How do I reset the P111E code after repairs on my Silverado?

After completing repairs, clear the code with an OBDII scanner and test drive the vehicle to ensure the issue is resolved.

10. Could the P111E code be caused by low coolant levels?

Yes, low coolant levels can cause erratic temperature sensor readings and potentially trigger the P111E code. Always check and maintain proper coolant levels.

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