AutoCodes – Chevrolet – P3074 Chevrolet

P3074 Chevrolet Code - Engine Coolant Pump High 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: P3074 Chevrolet indicates Engine Coolant Pump High 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 392

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 P3074 Chevrolet 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 P3074 Chevrolet - Engine Coolant Pump High Current - AutoCodes.com — P3074 Chevrolet Code - Engine Coolant Pump High Current

What does this mean?

What are the Possible Causes of the DTC P3074 Chevrolet?

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 P3074 Chevrolet?

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 P3074 Chevrolet 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 P3074 Chevrolet code?

Need more information on how to fix the P3074 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P3074 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 P3074 Chevrolet Code

1. What does the OBDII code P3074 mean on a Chevrolet?

P3074 indicates that the engine control module (ECM) has detected excessively high current in the engine coolant pump circuit.

2. What are the common symptoms of the P3074 code?

Symptoms may include engine overheating, poor cabin heater performance, the check engine light illuminating, and potential engine performance issues.

3. What causes the P3074 code to trigger on a Chevrolet?

Common causes include a faulty engine coolant pump, damaged wiring or connectors in the pump circuit, or a failing ECM.

4. Can I still drive my Chevrolet with the P3074 code?

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

5. How do I diagnose the P3074 code on a Chevrolet?

Diagnosis involves inspecting the wiring and connectors for damage, testing the coolant pump for proper operation, and using a scan tool to check for additional codes.

6. How do I fix the P3074 code on my Chevrolet?

Repairs may include replacing the engine coolant pump, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

7. How much does it cost to repair the P3074 code on a Chevrolet?

Repair costs vary, but replacing the coolant pump typically ranges from $300 to $700, depending on labor rates and parts prices.

8. Can a bad thermostat cause the P3074 code?

No, a bad thermostat is unlikely to cause this code, as it specifically relates to the coolant pump's electrical circuit and current draw.

9. How can I prevent the P3074 code from occurring?

Regular maintenance, including inspecting and replacing the coolant pump when needed, as well as checking wiring and connectors, can help prevent this issue.

10. Will clearing the code fix the P3074 issue?

Clearing the code will reset the check engine light, but if the underlying issue is not resolved, the code will likely return.