AutoCodes – Buick – P3073 Buick

P3073 Buick Code - Engine Coolant Pump Low Current

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: P3073 Buick indicates Engine Coolant Pump Low Current.
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 264

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 P3073 Buick 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 Engine Coolant Pump Current is not within a calibrated range for greater than 3 s.

OBDII Code P3073 Buick - Engine Coolant Pump Low Current - AutoCodes.com — P3073 Buick Code - Engine Coolant Pump Low Current

What does this mean?

What are the Possible Causes of the DTC P3073 Buick?

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 P3073 Buick?

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 P3073 Buick 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 P3073 Buick 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 P3073 Buick Code

1. What does the OBDII code P3073 mean on a Buick?

P3073 indicates "Engine Coolant Pump Low Current," meaning the vehicleâ€™s engine control module (ECM) has detected an issue with the electrical current or performance of the coolant pump.

2. What are the symptoms of the P3073 code in a Buick?

Common symptoms include overheating, the check engine light turning on, poor engine performance, or unusual noises from the coolant pump.

3. What causes the P3073 code to appear?

Potential causes include a failing or damaged coolant pump, electrical wiring issues, a blown fuse, or a malfunctioning engine control module.

4. Can I drive my Buick with the P3073 code active?

Driving with the P3073 code is not recommended as it may lead to engine overheating, which can cause severe engine damage if not addressed promptly.

5. How is the P3073 code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the coolant pump, check for proper electrical connections, and test the voltage and current flow to the pump.

6. What repairs can fix the P3073 code?

Repairs may include replacing the coolant pump, fixing damaged wiring, replacing a blown fuse, or reprogramming or replacing the ECM if itâ€™s faulty.

7. How much does it cost to repair the P3073 code on a Buick?

Repair costs vary but typically range from $300 to $800, depending on whether the coolant pump or electrical components need replacement.

8. Can a faulty thermostat cause the P3073 code?

No, the P3073 code specifically relates to the engine coolant pumpâ€™s electrical current and not the thermostat.

9. Is the P3073 code common in Buicks?

While not overly common, it can occur in models with electrically driven coolant pumps, especially as the pump ages.

10. How can I prevent the P3073 code from occurring?

Regular maintenance, such as inspecting the cooling system, ensuring proper electrical connections, and replacing worn-out components, can help prevent this issue.