AutoCodes – Chevrolet – P111E Chevrolet

P111E Chevrolet Code - Engine Coolant Temperature Sensor Not Plausible

Quick Answer

The Engine Coolant Temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. Common causes include Faulty Engine Coolant Temperature (ECT) Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant Temperature Sensor circuit poor electrical connection. 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 Chevrolet indicates Engine Coolant Temperature Sensor Not Plausible.
Common causes: Common causes include Faulty Engine Coolant Temperature (ECT) Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant Temperature Sensor circuit poor electrical connection.
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.

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Code Popularity 11,300

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 30, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P111E Chevrolet Description

The Engine Coolant Temperature (ECT) sensor is a variable resistor that measures the temperature of the engine coolant. The Engine Control Module (ECM) supplies 5V to the ECT sensor signal circuit and a ground for the low reference circuit.
The purpose of this diagnostic is to determine if the input from the ECT sensor is skewed warmer or colder than the Intake Air Temperature (IAT) sensor and Radiator Coolant Temperature (RCT) sensor. The internal clock of the ECM will record the amount of time the engine is OFF. If the required engine OFF time is met at start-up, the ECM will compare temperatures between the ECT, IAT, and RCT sensors.
If the ECM detects that the temperature difference between the ECT, IAT, and RCT sensors is not within an acceptable operating range, the ECM will continue to run this diagnostic to determine if a block heater was active during the engine OFF time. The Diagnostic Trouble Code (DTC) will be set if the ECM detects that there is a temperature difference between the start-up Engine Coolant Temperature sensor, Intake Air Temperature sensor, and the Radiator Coolant Temperature (RCT) sensor.

OBDII Code P111E Chevrolet - Engine Coolant Temperature Sensor Not Plausible - AutoCodes.com — P111E Chevrolet Code - Engine Coolant Temperature Sensor Not Plausible

What does this mean?

What are the Possible Causes of the DTC P111E Chevrolet?

Faulty Engine Coolant Temperature (ECT) Sensor
Engine Coolant Temperature Sensor harness is open or shorted
Engine Coolant Temperature Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P111E 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 P111E 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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Need more information on how to fix the P111E Chevrolet code? Get Access to Factory Service Manuals

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Information for Specific Chevrolet Models

P111E 2014 Chevrolet Silverado — Engine Coolant Temperature Sensor Not Plausible
P111E 2015 Chevrolet Silverado — Engine Coolant Temperature Sensor Not Plausible
P111E 2016 Chevrolet Silverado — Engine Coolant Temperature Sensor Not Plausible
P111E 2017 Chevrolet Silverado — Engine Coolant Temperature Sensor Not Plausible
P111E 2018 Chevrolet Silverado — Engine Coolant Temperature Sensor Not Plausible

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 Chevrolet Code

1. What are the common symptoms of OBDII code P111E in a Chevrolet related to the Engine Coolant Temperature Sensor?

- Common symptoms include erratic temperature readings on the dashboard, overheating issues, and a potential decrease in engine performance.

2. What are the possible causes of OBDII code P111E indicating that the Engine Coolant Temperature Sensor is not plausible in a Chevrolet?

- The possible causes include a faulty coolant temperature sensor, wiring issues, cooling system problems, or a malfunctioning engine control module.

3. How can I diagnose the issue related to OBDII code P111E for the Engine Coolant Temperature Sensor in a Chevrolet?

- Diagnose the problem by checking the sensor's resistance, inspecting the wiring for damage, testing the coolant temperature sensor circuit, and verifying proper coolant levels.

4. Can I continue driving my Chevrolet with OBDII code P111E indicating an issue with the Engine Coolant Temperature Sensor?

- It is not recommended to drive the vehicle with this code active, as inaccurate temperature readings can lead to engine damage or overheating.

5. How can I repair OBDII code P111E for the Engine Coolant Temperature Sensor in my Chevrolet?

- Repair options include replacing the faulty coolant temperature sensor, fixing any wiring issues, ensuring proper coolant levels, and resetting the trouble code with a diagnostic tool.

6. Will resetting the OBDII code P111E related to the Engine Coolant Temperature Sensor in my Chevrolet fix the issue?

- Resetting the code may temporarily clear the warning, but if the underlying problem with the sensor or cooling system is not addressed, the code is likely to return.

7. Is it possible to clean or repair the Engine Coolant Temperature Sensor to resolve OBDII code P111E in a Chevrolet?

- In most cases, the coolant temperature sensor should be replaced rather than cleaned or repaired, as it is a critical component for accurate temperature readings.

8. Can a DIY enthusiast replace the Engine Coolant Temperature Sensor to fix OBDII code P111E in a Chevrolet?

- Replacing the coolant temperature sensor is typically a straightforward task that can be done by a DIY enthusiast with basic tools and some automotive knowledge.

9. How long does it take to replace the Engine Coolant Temperature Sensor in a Chevrolet to address OBDII code P111E?

- The replacement process usually takes around 30 minutes to an hour, depending on the specific Chevrolet model and the accessibility of the sensor location.

10. Are there any preventive measures I can take to avoid encountering OBDII code P111E related to the Engine Coolant Temperature Sensor in my Chevrolet?

- Regularly inspecting and maintaining the cooling system, checking coolant levels, and addressing any temperature-related issues promptly can help prevent the occurrence of this code.