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P3443 GMC Code - Cylinder 6 Deactivation Solenoid Valve Control Circuit Low Voltage

Quick Answer

The P3443 GMC diagnostic trouble code indicates an issue with the Cylinder 6 Deactivation Solenoid Valve Control Circuit having low voltage. Common causes include Faulty Cylinder 6 Deactivation Solenoid Valve, Wiring issues in the control 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
P3443 GMC indicates Cylinder 6 Deactivation Solenoid Valve Control Circuit Low Voltage.
Common causes
Common causes include Faulty Cylinder 6 Deactivation Solenoid Valve, Wiring issues in the control 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P3443 GMC Description

The P3443 GMC diagnostic trouble code indicates an issue with the Cylinder 6 Deactivation Solenoid Valve Control Circuit having low voltage. This solenoid valve is responsible for controlling the deactivation of the cylinder 6 in the engine, which is a crucial component of the variable displacement system used in modern vehicles. When the solenoid valve is not receiving sufficient voltage, it can lead to a variety of performance issues in the vehicle.

OBDII Code P3443 GMC - Cylinder 6 Deactivation Solenoid Valve Control Circuit Low Voltage
P3443 GMC Code - Cylinder 6 Deactivation Solenoid Valve Control Circuit Low Voltage

Common Causes of P3443 GMC

  1. Faulty Cylinder 6 Deactivation Solenoid Valve
  2. Wiring issues in the control circuit
  3. Poor electrical connection
  4. Engine computer (PCM) failure
  5. Low engine oil level

Symptoms of P3443 GMC

  1. Reduced fuel efficiency
  2. Engine misfires
  3. Loss of power
  4. Rough idling
  5. Illuminated check engine light

How to Fix P3443 GMC

  1. Perform a visual inspection of the solenoid valve and wiring to check for any obvious signs of damage or corrosion.
  2. Test the solenoid valve using a multimeter to determine if it is functioning properly.
  3. Check and repair any faulty wiring or connections in the control circuit.
  4. Replace the Cylinder 6 Deactivation Solenoid Valve if it is determined to be faulty.
  5. Clear the diagnostic trouble codes from the engine control module and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P3443 GMC

The typical repair costs for addressing the P3443 GMC code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, replacing the Cylinder 6 Deactivation Solenoid Valve and addressing any wiring issues could cost between $200 and $500, including parts and labor. However, it is important to note that labor rates can vary significantly based on location, vehicle make and model, and other factors. It is recommended to obtain a detailed estimate from a trusted auto repair shop before proceeding with the repairs.

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Information for Specific GMC Models

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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