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P111E 2015 Chevrolet Silverado Code - Engine Coolant Temperature Sensor Not Plausible

Quick Answer

The P111E diagnostic trouble code (DTC) for a 2015 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 in the coolant temperature sensor circuit, Coolant leaks affecting sensor readings. 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 2015 Chevrolet Silverado indicates Engine Coolant Temperature Sensor Not Plausible.
Common causes
Common causes include Faulty Engine Coolant Temperature Sensor, Wiring or connector issues in the coolant temperature sensor circuit, Coolant leaks affecting sensor readings.
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 15, 2024
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Code P111E 2015 Chevrolet Silverado Description

The P111E diagnostic trouble code (DTC) for a 2015 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 monitors the temperature of the engine coolant and sends this information to the ECM. This data is essential for the ECM to adjust fuel delivery and ignition timing to ensure optimal engine performance and efficiency.

OBDII Code P111E 2015 Chevrolet Silverado - Engine Coolant Temperature Sensor Not Plausible
P111E 2015 Chevrolet Silverado Code - Engine Coolant Temperature Sensor Not Plausible

Common Causes of P111E 2015 Chevrolet Silverado

  1. Faulty Engine Coolant Temperature Sensor
  2. Wiring or connector issues in the coolant temperature sensor circuit
  3. Coolant leaks affecting sensor readings
  4. ECM software issues
  5. Engine overheating causing sensor malfunction

Symptoms of P111E 2015 Chevrolet Silverado

  1. Check Engine Light illuminated on the dashboard
  2. Engine running hotter or colder than normal
  3. Poor fuel efficiency
  4. Rough idling or stalling
  5. Difficulty starting the engine

How to Fix P111E 2015 Chevrolet Silverado

  1. Begin by diagnosing the issue using a scan tool to confirm the P111E DTC and pinpoint the exact cause of the problem.
  2. Inspect the Engine Coolant Temperature Sensor and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
  3. Check for coolant leaks that may be affecting the sensor's readings and repair any leaks found.
  4. Clear the DTC from the ECM's memory using the scan tool and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or other related components.

Cost to Fix P111E 2015 Chevrolet Silverado

The cost of repairing a P111E DTC on a 2015 Chevrolet Silverado can vary depending on the exact cause of the issue. In general, replacing the Engine Coolant Temperature Sensor and addressing any related wiring or coolant leaks can cost between $100 and $300 for parts and labor. Additional diagnostic time and labor rates at auto repair shops can vary, typically ranging between $80 and $150 per hour. It's advisable to check with local repair shops for a more accurate estimate based on your specific location and vehicle.

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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 2015 Chevrolet Silverado Code

1. What does the OBDII code P111E mean on a 2015 Chevrolet Silverado?

P111E indicates that the Engine Coolant Temperature (ECT) sensor is reporting values that are not plausible or outside the expected range.

2. What are the common symptoms of code P111E in a 2015 Chevrolet Silverado?

Symptoms include the check engine light turning on, poor engine performance, erratic temperature gauge readings, and potential overheating or difficulty starting the engine.

3. What causes the P111E code to appear?

Common causes include a faulty ECT sensor, damaged or corroded wiring, a bad connection in the sensor's circuit, or issues with the engine control module (ECM).

4. Can driving with code P111E damage my Silverado?

Yes, prolonged driving with this code can cause engine overheating, reduced fuel efficiency, and potential engine damage if the issue isn't addressed.

5. How do I diagnose the P111E code on my 2015 Chevrolet Silverado?

Diagnosis involves checking the ECT sensor for proper operation, inspecting wiring and connectors for damage, and using a scan tool to monitor live temperature sensor data.

6. Can I fix the P111E code by resetting the check engine light?

Resetting the light without addressing the underlying issue may temporarily clear the code, but it will likely return if the problem persists.

7. How much does it typically cost to repair code P111E?

Repair costs vary but typically range from $100 to $300, depending on whether the sensor needs replacing or if wiring repairs are required.

8. Can a thermostat issue trigger the P111E code?

Yes, a stuck thermostat can cause abnormal coolant temperature readings and may contribute to the P111E code.

9. Do I need to replace the engine coolant temperature sensor to fix code P111E?

Not always. While a faulty sensor is a common cause, the issue could also stem from wiring or connector problems. Proper diagnosis is essential.

10. How can I prevent the P111E code from recurring in my Silverado?

Regularly inspect and maintain the cooling system, including the coolant level, wiring, and connections to the ECT sensor, and replace components as needed.

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