Engine-CodesChevrolet – P0119 Chevrolet

P0119 Chevrolet Code - Engine Coolant Temperature Circuit Intermittent

Quick Answer

The P0119 code for Chevrolet indicates an issue with the engine coolant temperature circuit intermittently malfunctioning. Common causes include Faulty engine coolant temperature sensor, Wiring or connector issues in the coolant temperature circuit, ECM malfunction. 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 Chevrolet indicates Engine Coolant Temperature Circuit Intermittent.
Common causes
Common causes include Faulty engine coolant temperature sensor, Wiring or connector issues in the coolant temperature circuit, ECM malfunction.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0119 Chevrolet Description

The P0119 code for Chevrolet indicates an issue with the engine coolant temperature circuit intermittently malfunctioning. The engine coolant temperature sensor is responsible for monitoring the temperature of the engine coolant and sending this information to the engine control module (ECM). This data is crucial for the ECM to adjust fuel delivery and ignition timing to optimize engine performance and fuel efficiency. When the circuit intermittently fails, it can lead to inaccurate temperature readings, causing potential engine overheating, poor fuel economy, and emissions issues. If left unaddressed, this issue can lead to engine damage and costly repairs.

OBDII Code P0119 Chevrolet - Engine Coolant Temperature Circuit Intermittent
P0119 Chevrolet Code - Engine Coolant Temperature Circuit Intermittent

Common Causes of P0119 Chevrolet

  1. Faulty engine coolant temperature sensor
  2. Wiring or connector issues in the coolant temperature circuit
  3. ECM malfunction
  4. Low coolant levels or coolant leaks
  5. Engine overheating causing sensor damage

Symptoms of P0119 Chevrolet

  1. Check engine light illuminated on the dashboard
  2. Inaccurate temperature gauge readings
  3. Engine overheating or running hotter than usual
  4. Poor fuel economy
  5. Rough idling or stalling

How to Fix P0119 Chevrolet

  1. Begin by diagnosing the issue with a scan tool to retrieve the specific trouble code.
  2. Inspect the engine coolant temperature sensor and its wiring for any signs of damage or corrosion.
  3. Test the sensor's resistance and compare it to manufacturer specifications to determine if it is faulty.
  4. Check the coolant level and system for any leaks or blockages.
  5. Replace the engine coolant temperature sensor if necessary and clear the trouble code from the ECM.

Cost to Fix P0119 Chevrolet

The cost to repair a P0119 code for a Chevrolet can vary depending on the specific cause of the issue. Typically, the cost of a new engine coolant temperature sensor ranges from $20 to $100, and labor costs can range from $80 to $150 per hour. Overall, the total repair cost can range from $100 to $300, but it's essential to consult with a professional mechanic for a more accurate estimate based on your vehicle's make and model.

Tech Notes for P0119 Chevrolet





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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 Chevrolet Code

1. What are the common symptoms of OBDII code P0119 in a Chevrolet?

- Common symptoms include erratic engine temperature readings on the dashboard, engine overheating, poor fuel efficiency, and potential stalling or rough idling.

2. What could cause the OBDII code P0119 in a Chevrolet to trigger?

- The code P0119 is usually triggered by a faulty engine coolant temperature (ECT) sensor, issues with the ECT sensor wiring or connectors, or a malfunctioning cooling system.

3. How can I diagnose the OBDII code P0119 in my Chevrolet?

- To diagnose the code P0119, you can use a diagnostic scan tool to check for the specific trouble code, inspect the ECT sensor and its wiring for any visible damage, and test the sensor's resistance with a multimeter.

4. Can I drive my Chevrolet with the OBDII code P0119 present?

- It is not recommended to drive your Chevrolet with the code P0119 present, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

5. What are some DIY repair tips for fixing OBDII code P0119 in a Chevrolet?

- DIY repair tips include checking and replacing the ECT sensor if faulty, inspecting and repairing any damaged wiring or connectors, and ensuring the cooling system is functioning properly.

6. How much does it typically cost to repair OBDII code P0119 in a Chevrolet?

- The cost of repairing OBDII code P0119 in a Chevrolet can vary depending on the exact cause of the issue and whether you choose to do the repairs yourself or take it to a mechanic. Costs can range from around $50 to $200 or more.

7. Is it safe to reset the OBDII code P0119 without fixing the underlying issue?

- It is not recommended to simply reset the code without addressing the underlying issue, as this can lead to ongoing problems with engine performance and potentially cause further damage.

8. Can a faulty thermostat cause the OBDII code P0119 in a Chevrolet?

- Yes, a faulty thermostat can sometimes cause the code P0119 to trigger, as it can affect the proper functioning of the engine coolant temperature sensor and lead to inaccurate readings.

9. Will the check engine light turn off on its own after fixing the OBDII code P0119 in a Chevrolet?

- In most cases, once the underlying issue causing the code P0119 is fixed, the check engine light should turn off on its own after a few driving cycles where the problem does not reoccur.

10. How important is it to address the OBDII code P0119 promptly in a Chevrolet?

- It is important to address the code P0119 promptly to avoid potential engine damage, overheating, and related performance issues. Ignoring the code can lead to more costly repairs down the line.

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