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U0672 Chevrolet Code - Lost Communication With Engine Coolant Pump

Quick Answer

The U0672 code for Chevrolet indicates that there is a communication issue with the engine coolant pump. Common causes include Faulty engine coolant pump, Wiring or electrical connection issues, Defective Engine Control Module (ECM). 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
U0672 Chevrolet indicates Lost Communication With Engine Coolant Pump.
Common causes
Common causes include Faulty engine coolant pump, Wiring or electrical connection issues, Defective Engine Control Module (ECM).
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 05, 2024
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Code U0672 Chevrolet Description

The U0672 code for Chevrolet indicates that there is a communication issue with the engine coolant pump. This means that the Engine Control Module (ECM) is not receiving or sending the necessary signals to the engine coolant pump, which can result in inefficient cooling of the engine. The engine coolant pump plays a crucial role in maintaining the optimal temperature of the engine by circulating coolant through the engine block and radiator. If this communication is lost, it can lead to overheating, reduced performance, and potential damage to the engine.

OBDII Code U0672 Chevrolet - Lost Communication With Engine Coolant Pump
U0672 Chevrolet Code - Lost Communication With Engine Coolant Pump

Common Causes of U0672 Chevrolet

  1. Faulty engine coolant pump
  2. Wiring or electrical connection issues
  3. Defective Engine Control Module (ECM)
  4. Corroded connectors or terminals
  5. Software issues with the vehicle's computer system

Symptoms of U0672 Chevrolet

  1. Engine overheating
  2. Poor engine performance
  3. Coolant leakage
  4. Check Engine Light illuminated
  5. Engine stalling or rough idling

How to Fix U0672 Chevrolet

  1. Inspect and test the engine coolant pump for proper functionality.
  2. Check the wiring and connectors for any damage or corrosion.
  3. Scan the ECM for any fault codes and reset the system.
  4. Repair or replace any damaged wiring or connectors.
  5. Update the vehicle's software if necessary.

Cost to Fix U0672 Chevrolet

The typical repair costs for addressing a lost communication with the engine coolant pump code can range from $150 to $500, including parts and labor. However, actual costs may vary depending on the specific diagnosis time, labor rates, and the extent of the issue. It's recommended to consult with a professional mechanic for a more accurate estimate based on the vehicle's make and model.

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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 U0672 Chevrolet Code

1. What are the common symptoms of OBDII code U0672 in a Chevrolet related to lost communication with the engine coolant pump?

- Common symptoms include overheating of the engine, erratic coolant temperature readings on the dashboard, and possible illumination of the check engine light.

2. What are some potential causes of OBDII code U0672 in a Chevrolet indicating lost communication with the engine coolant pump?

- Possible causes may include a faulty engine coolant pump, damaged wiring or connectors in the coolant pump circuit, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the issue causing OBDII code U0672 in my Chevrolet for lost communication with the engine coolant pump?

- Diagnosis typically involves inspecting the coolant pump and its connections for any visible damage, checking the wiring harness for continuity, and using a diagnostic scanner to communicate with the PCM.

4. Is it safe to continue driving my Chevrolet with OBDII code U0672 indicating lost communication with the engine coolant pump?

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

5. What are some repair tips for resolving OBDII code U0672 indicating lost communication with the engine coolant pump in a Chevrolet?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the engine coolant pump if necessary, and ensuring proper communication between the PCM and the coolant pump.

6. Can a DIY enthusiast fix OBDII code U0672 related to lost communication with the engine coolant pump in a Chevrolet?

- Depending on the root cause of the issue, DIY enthusiasts with automotive repair experience may be able to address this code by carefully following diagnostic procedures and repair guidelines.

7. How much does it typically cost to repair OBDII code U0672 indicating lost communication with the engine coolant pump in a Chevrolet?

- The cost of repair can vary depending on the cause of the issue, the extent of the damage, and whether professional labor is required. Costs may range from a few hundred to over a thousand dollars.

8. Can resetting the OBDII system clear the U0672 code for lost communication with the engine coolant pump in a Chevrolet?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

9. Are there any preventive measures to avoid encountering OBDII code U0672 in a Chevrolet due to lost communication with the engine coolant pump?

- Regular maintenance of the cooling system, including checking coolant levels and addressing any cooling system issues promptly, can help prevent issues that may trigger this code.

10. How urgent is it to address OBDII code U0672 indicating lost communication with the engine coolant pump in a Chevrolet?

- It is important to address this code promptly to prevent potential engine damage from overheating. Ignoring the issue can lead to costly repairs and safety risks.

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