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Engine-Codes – Generic – P3419

P3419 Code - Cylinder 3 Deactivation/Intake Valve Control Circuit Low

Quick Answer

The diagnostic trouble code P3419 indicates an issue with the Cylinder 3 Deactivation/Intake Valve Control Circuit being detected as low. Common causes include Faulty intake valve control solenoid, Wiring issues or loose connections in the intake valve control circuit, ECM malfunction. 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
P3419 indicates Cylinder 3 Deactivation/Intake Valve Control Circuit Low.
Common causes
Common causes include Faulty intake valve control solenoid, Wiring issues or loose connections in the intake valve control circuit, ECM malfunction.
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 P3419 Description

The diagnostic trouble code P3419 indicates an issue with the Cylinder 3 Deactivation/Intake Valve Control Circuit being detected as low. This code is typically found in vehicles equipped with Variable Valve Timing (VVT) systems, which control the opening and closing of the intake valves to optimize engine performance and fuel efficiency. In this case, the code specifically points to a problem with the intake valve control circuit for cylinder 3.

OBDII Code P3419 - Cylinder 3 Deactivation/Intake Valve Control Circuit Low
P3419 Code - Cylinder 3 Deactivation/Intake Valve Control Circuit Low

Common Causes of P3419

  1. Faulty intake valve control solenoid.
  2. Wiring issues or loose connections in the intake valve control circuit.
  3. ECM malfunction.
  4. Mechanical problem with the intake valve itself.
  5. Low engine oil level or poor oil quality affecting valve operation.

Symptoms of P3419

  1. Reduced engine power or acceleration.
  2. Rough idling or stalling.
  3. Poor fuel economy.
  4. Illuminated check engine light.
  5. Engine misfires.

How to Fix P3419

  1. Begin by conducting a thorough inspection of the intake valve control circuit for cylinder 3, checking for any visible damage, loose connections, or corrosion.
  2. Test the intake valve control solenoid for proper operation using a multimeter to measure voltage and resistance.
  3. If the solenoid is faulty, replace it with a new one and ensure proper installation.
  4. Check the wiring harness for any signs of damage or wear, repairing or replacing any affected wires as needed.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to verify that the issue has been resolved.

Cost to Fix P3419

The typical repair costs for addressing a Cylinder 3 Deactivation/Intake Valve Control Circuit Low issue can range from $150 to $400, including parts and labor. However, it is important to note that actual costs may vary depending on the specific vehicle make and model, the location of the repair shop, and the extent of the repairs needed. Diagnostic time and labor rates can also influence the final cost, with rates typically ranging between $80 and $150 per hour. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate for this repair.

When is the Code Detected?

The control module detects that the actual measured values from the MAF sensor, MAP sensor, and TP sensor, is not within the range of the calculated values for cylinder deactivation mode

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Code P3419 Information for Specific Makes

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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