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Engine-Codes – Generic – P3433

P3433 Code - Cylinder 5 Deactivation/Intake Valve Control Circuit/Open

Quick Answer

The P3433 diagnostic trouble code (DTC) indicates an issue with the Cylinder 5 Deactivation/Intake Valve Control Circuit being open. Common causes include Faulty solenoid: The solenoid responsible for controlling the cylinder deactivation may be malfunctioning, Wiring issues: Damaged or corroded wiring in the control circuit can prevent proper operation, Sensor malfunction: A sensor that provides feedback to the ECM for cylinder deactivation may be faulty. 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
P3433 indicates Cylinder 5 Deactivation/Intake Valve Control Circuit/Open.
Common causes
Common causes include Faulty solenoid: The solenoid responsible for controlling the cylinder deactivation may be malfunctioning, Wiring issues: Damaged or corroded wiring in the control circuit can prevent proper operation, Sensor malfunction: A sensor that provides feedback to the ECM for cylinder deactivation may be faulty.
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 16, 2024
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Code P3433 Description

The P3433 diagnostic trouble code (DTC) indicates an issue with the Cylinder 5 Deactivation/Intake Valve Control Circuit being open. In modern vehicles equipped with cylinder deactivation technology, certain cylinders can be shut off during light load conditions to improve fuel efficiency. In this case, Cylinder 5 is not deactivating as intended, which can lead to decreased fuel economy, reduced engine performance, and potential long-term damage if left unresolved.

OBDII Code P3433 - Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
P3433 Code - Cylinder 5 Deactivation/Intake Valve Control Circuit/Open

Common Causes of P3433

  1. Faulty solenoid: The solenoid responsible for controlling the cylinder deactivation may be malfunctioning.
  2. Wiring issues: Damaged or corroded wiring in the control circuit can prevent proper operation.
  3. Sensor malfunction: A sensor that provides feedback to the ECM for cylinder deactivation may be faulty.
  4. ECM problem: An issue with the engine control module could prevent it from sending the correct signals to deactivate the cylinder.

Symptoms of P3433

  1. Decreased fuel efficiency: The engine may consume more fuel than usual due to the cylinder not deactivating properly.
  2. Reduced engine performance: The vehicle may lack power or acceleration, especially during light load conditions.
  3. Rough idling: The engine may run rough or exhibit vibrations at idle.
  4. Check Engine Light: The illumination of the Check Engine Light is a common symptom of this code.

How to Fix P3433

  1. Diagnose the issue: Use a scan tool to retrieve the trouble code and perform a thorough inspection of the Cylinder 5 Deactivation/Intake Valve Control Circuit.
  2. Check wiring and connections: Inspect the wiring harness for any damage or corrosion, and ensure all connections are secure.
  3. Test solenoid and sensors: Check the solenoid and relevant sensors for proper operation and replace if necessary.
  4. Reset ECM: Clear the trouble code from the ECM and reset the system to see if the issue persists.
  5. Verify repair: After completing the repair steps, test drive the vehicle to confirm that the cylinder deactivation is functioning correctly.

Cost to Fix P3433

The typical repair costs for addressing the P3433 code can vary depending on the specific cause of the issue. In general, parts such as a solenoid or sensor replacement may range from $100 to $300, while labor costs could add another $100 to $200. Overall, the total repair cost could fall between $200 and $500. It's important to note that diagnosis time and labor rates can vary, so it's advisable to check with local auto repair shops for a more accurate estimate based on your vehicle make and model.

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

Need more information about the P3433 code?

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Code P3433 Information for Specific Makes

  • P3433 Buick — Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
  • P3433 Cadillac — Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
  • P3433 Chevrolet — Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
  • P3433 Chrysler — Multiple Displacement System Solenoid 5 Circuit
  • P3433 Dodge — Multiple Displacement System Solenoid 5 Circuit
  • P3433 GMC — Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
  • P3433 Jeep — Multiple Displacement System Solenoid 5 Circuit
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 P3433 Code

1. What are common symptoms of OBDII code P3433 (Cylinder 5 Deactivation/Intake Valve Control Circuit/Open)?

Symptoms may include reduced engine performance, rough idling, misfires, and an illuminated check engine light.

2. What does OBDII code P3433 indicate?

P3433 indicates a problem with the intake valve control circuit for cylinder 5 in the engine.

3. What are possible causes of OBDII code P3433?

Possible causes include a faulty intake valve control solenoid, damaged wiring or connectors, engine mechanical problems, or a malfunctioning PCM.

4. How can I diagnose the issue causing OBDII code P3433?

Diagnosis typically involves inspecting the intake valve control solenoid, checking the wiring and connectors for damage, performing a circuit test, and scanning the PCM for related codes.

5. Can I still drive my vehicle with OBDII code P3433?

It is not recommended to drive with this code present, as it can lead to further engine damage and reduced performance. It's best to address the issue promptly.

6. How can I repair OBDII code P3433?

Repair options include replacing the intake valve control solenoid, repairing or replacing damaged wiring or connectors, addressing any underlying engine mechanical issues, or reprogramming the PCM.

7. Is it safe to ignore OBDII code P3433?

Ignoring the code can lead to more serious engine problems over time, so it is not advisable to ignore it. Addressing the issue promptly can prevent further damage.

8. Can a DIY enthusiast fix OBDII code P3433?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides and using diagnostic tools. However, complex issues may require professional assistance.

9. How much does it cost to repair OBDII code P3433?

Repair costs can vary depending on the underlying cause of the code, parts needed, and labor rates. It's recommended to get a diagnostic from a mechanic to determine an accurate repair estimate.

10. How can I prevent OBDII code P3433 from occurring again?

Regular maintenance, such as checking and replacing worn components, keeping up with oil changes, and addressing engine issues promptly, can help prevent the recurrence of this code.

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