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Engine-Codes – GMC – P3074 GMC

P3074 GMC Code - Engine Coolant Pump High Current

Quick Answer

The P3074 GMC code indicates a problem with the engine coolant pump drawing high current. Common causes include Malfunctioning engine coolant pump, Wiring issues causing excessive current draw, Faulty coolant temperature sensor. 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 GMC indicates Engine Coolant Pump High Current.
Common causes
Common causes include Malfunctioning engine coolant pump, Wiring issues causing excessive current draw, Faulty coolant temperature sensor.
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 15, 2024
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Code P3074 GMC Description

The P3074 GMC code indicates a problem with the engine coolant pump drawing high current. The engine coolant pump is responsible for circulating coolant through the engine to maintain optimal operating temperature. When the pump draws high current, it can lead to overheating, inefficient cooling, and potential damage to the engine components.

OBDII Code P3074 GMC - Engine Coolant Pump High Current
P3074 GMC Code - Engine Coolant Pump High Current

Common Causes of P3074 GMC

  1. Malfunctioning engine coolant pump
  2. Wiring issues causing excessive current draw
  3. Faulty coolant temperature sensor
  4. Engine control module malfunction
  5. Low coolant levels

Symptoms of P3074 GMC

  1. Engine overheating
  2. Coolant leaks
  3. Engine running hot at idle
  4. Reduced engine performance
  5. Check engine light illuminated

How to Fix P3074 GMC

  1. Diagnose the issue by checking the engine coolant pump, wiring, coolant temperature sensor, and engine control module.
  2. Replace the engine coolant pump if it is found to be malfunctioning.
  3. Repair or replace any damaged wiring causing excessive current draw.
  4. Replace the faulty coolant temperature sensor if necessary.
  5. Reset the engine control module and clear the diagnostic trouble codes.

Cost to Fix P3074 GMC

The typical repair costs for addressing a P3074 GMC code can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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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.

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