AutoCodes – Chevrolet – P0119 2017 Chevrolet Silverado

P0119 2017 Chevrolet Silverado Code - Engine Coolant Temperature Circuit Intermittent

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
P0119 2017 Chevrolet Silverado indicates Engine Coolant Temperature Circuit Intermittent.
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.
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Code Popularity 418
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 20, 2022
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Code P0119 2017 Chevrolet Silverado 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 5 V to the ECT sensor signal circuit and a ground for the low reference circuit.
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 the ECT is Intermittent for greater than 3 s.
OBDII Code P0119 2017 Chevrolet Silverado - Engine Coolant Temperature Circuit Intermittent - AutoCodes.com
P0119 2017 Chevrolet Silverado Code - Engine Coolant Temperature Circuit Intermittent

What are the Possible Causes of the DTC P0119 2017 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 P0119 2017 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 P0119 2017 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.

Need more information about the P0119 2017 Chevrolet Silverado code?

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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 P0119 2017 Chevrolet Silverado Code

What does the OBDII code P0119 mean for a 2017 Chevrolet Silverado?

P0119 indicates an intermittent issue in the Engine Coolant Temperature (ECT) sensor circuit, meaning the sensor is sending inconsistent or erratic signals to the engine control module.

What are the common symptoms of code P0119 in a 2017 Chevrolet Silverado?

Symptoms may include engine overheating, poor fuel economy, difficulty starting, erratic temperature gauge readings, and the check engine light turning on.

What causes the P0119 code to appear on a 2017 Chevrolet Silverado?

Common causes include a faulty ECT sensor, damaged wiring or connectors, corrosion in the sensor circuit, or issues with the engine control module.

Can a bad thermostat trigger the P0119 code?

Yes, a malfunctioning thermostat that affects coolant flow can cause erratic temperature readings, potentially triggering the P0119 code.

How can I diagnose code P0119 in my Chevy Silverado?

Start by checking the ECT sensor and wiring for damage or corrosion. Use a multimeter to test the sensor's resistance and inspect the thermostat for proper operation.

Is it safe to drive with the P0119 code on a 2017 Chevrolet Silverado?

Driving with this code may lead to engine overheating or poor performance. It is best to address the issue promptly to prevent potential engine damage.

How do I fix the P0119 code on a 2017 Chevrolet Silverado?

Repairs may include replacing the ECT sensor, repairing or replacing damaged wiring, cleaning connections, or addressing thermostat issues if needed.

Will clearing the P0119 code solve the problem permanently?

Clearing the code may temporarily remove the check engine light, but the underlying issue must be repaired to prevent the code from returning.

How much does it cost to fix the P0119 code on a Chevy Silverado?

Repair costs vary depending on the problem. Replacing the ECT sensor typically costs $100-$250, while fixing wiring or thermostat issues may cost more.

Can extreme weather conditions cause the P0119 code to appear?

Yes, extreme cold or heat can affect the ECT sensor's performance or exacerbate existing circuit issues, leading to intermittent signals and the P0119 code.

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