AutoCodes – Cadillac – U0672 Cadillac

U0672 Cadillac Code - Lost Communication With Engine Coolant Pump

Quick Answer

The cooling system's function is to maintain an efficient engine operating temperature during all engine speeds and operating conditions. Common causes include Faulty Engine Coolant Pump, Engine Coolant Pump harness is open or shorted, Engine Coolant Pump 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: U0672 Cadillac indicates Lost Communication With Engine Coolant Pump.
Common causes: Common causes include Faulty Engine Coolant Pump, Engine Coolant Pump harness is open or shorted, Engine Coolant Pump 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 598

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 Aug 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0672 Cadillac Description

The cooling system's function is to maintain an efficient engine operating temperature during all engine speeds and operating conditions. The cooling system is designed to remove various amounts of the heat produced by the burning of the air-fuel mixture. When the engine is cold, the coolant does not flow to the radiator until the thermostat opens. This allows the engine to warm up quickly. The Diagnostic Trouble Code (DTC) will be set when the serial data circuit current is out of range.

OBDII Code U0672 Cadillac - Lost Communication With Engine Coolant Pump - AutoCodes.com — U0672 Cadillac Code - Lost Communication With Engine Coolant Pump

What does this mean?

What are the Possible Causes of the DTC U0672 Cadillac?

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

How to Fix the DTC U0672 Cadillac?

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 U0672 Cadillac 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 U0672 Cadillac code?

Need more information on how to fix the U0672 Cadillac code? Get Access to Factory Service Manuals

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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 Cadillac Code

1. What does the OBDII code U0672 mean on a Cadillac?

U0672 indicates lost communication with the engine coolant pump, meaning the vehicle's control modules are unable to communicate with the coolant pump.

2. What are the symptoms of code U0672 on a Cadillac?

Common symptoms include engine overheating, reduced engine performance, the check engine light turning on, and possible cooling system warnings on the dashboard.

3. What causes the U0672 code to appear?

The code can be triggered by a faulty engine coolant pump, damaged wiring or connectors, a failed control module, or software issues in the vehicle's communication network.

4. Can I drive my Cadillac with the U0672 code?

Driving with this code is not recommended, as it can lead to engine overheating and severe damage if the coolant pump is not functioning.

5. How do I diagnose the U0672 code on my Cadillac?

Start by checking the wiring and connectors for the engine coolant pump, then use a scan tool to test the pump's communication with the vehicle's control modules.

6. What repairs are needed to fix the U0672 code?

Repairs may include replacing the engine coolant pump, repairing or replacing damaged wiring or connectors, or reprogramming or replacing a faulty control module.

7. How much does it cost to fix the U0672 code on a Cadillac?

Repair costs vary but typically range from $200 to $800, depending on whether the coolant pump, wiring, or control module needs replacement.

8. Can a software update fix the U0672 code on my Cadillac?

Yes, a software update may resolve the issue if the problem is related to communication errors in the vehicle's control modules.

9. How can I prevent the U0672 code from reoccurring?

Ensure regular maintenance of the cooling system, inspect wiring and connectors for damage, and address any warning signs promptly to prevent communication issues.

10. Is the U0672 code specific to Cadillacs?

While U0672 can appear on other vehicles, the specifics of the code and its impact may vary based on the vehicle make and model. Always consult Cadillac-specific repair information.