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P3428 Dodge Code - Cylinder 4 Deactivation Control Circuit High

Quick Answer

The P3428 OBD-II trouble code indicates an issue with the Cylinder 4 Deactivation Control Circuit in a Dodge vehicle. Common causes include Faulty Solenoid: A malfunctioning solenoid in the cylinder deactivation system could trigger this code, Wiring Issues: Problems with the wiring or connections in the control circuit can lead to a high voltage condition and the P3428 code, ECM Malfunction: A fault in the engine control module (ECM) responsible for managing cylinder deactivation could cause this issue. 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
P3428 Dodge indicates Cylinder 4 Deactivation Control Circuit High.
Common causes
Common causes include Faulty Solenoid: A malfunctioning solenoid in the cylinder deactivation system could trigger this code, Wiring Issues: Problems with the wiring or connections in the control circuit can lead to a high voltage condition and the P3428 code, ECM Malfunction: A fault in the engine control module (ECM) responsible for managing cylinder deactivation could cause this issue.
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 P3428 Dodge Description

The P3428 OBD-II trouble code indicates an issue with the Cylinder 4 Deactivation Control Circuit in a Dodge vehicle. This code specifically points to a high voltage condition in the circuit that controls the deactivation of the fourth cylinder in the engine. In vehicles with cylinder deactivation technology, the engine can switch off certain cylinders under light load conditions to improve fuel efficiency.

OBDII Code P3428 Dodge - Cylinder 4 Deactivation Control Circuit High
P3428 Dodge Code - Cylinder 4 Deactivation Control Circuit High

Common Causes of P3428 Dodge

  1. Faulty Solenoid: A malfunctioning solenoid in the cylinder deactivation system could trigger this code.
  2. Wiring Issues: Problems with the wiring or connections in the control circuit can lead to a high voltage condition and the P3428 code.
  3. ECM Malfunction: A fault in the engine control module (ECM) responsible for managing cylinder deactivation could cause this issue.
  4. Cylinder Deactivation System Fault: An issue with the cylinder deactivation system itself, such as a mechanical problem, could be a potential cause.

Symptoms of P3428 Dodge

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: A decrease in fuel efficiency may be noticed due to the cylinder not deactivating properly, leading to higher fuel consumption.
  3. Engine Misfires: The engine may experience misfires or rough idling as a result of cylinder 4 not deactivating as intended.
  4. Reduced Power: The vehicle may exhibit a decrease in power or acceleration due to the cylinder deactivation issue affecting engine performance.

How to Fix P3428 Dodge

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the trouble code and further diagnose the specific cause of the Cylinder 4 Deactivation Control Circuit High issue.
  2. Inspect Wiring and Connections: Check the wiring and connections in the control circuit for any damage, corrosion, or loose connections that may be causing the high voltage condition.
  3. Test Solenoid Functionality: Test the solenoid in the cylinder deactivation system to ensure it is functioning properly and replace it if necessary.
  4. Check ECM Function: Verify the functionality of the engine control module (ECM) and address any faults or malfunctions that may be contributing to the code.
  5. Clear Codes and Test Drive: Once repairs have been made, clear the trouble codes from the ECM and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P3428 Dodge

The typical repair costs for addressing the P3428 code related to the Cylinder 4 Deactivation Control Circuit High issue in a Dodge vehicle can vary depending on the specific cause of the problem. In general, parts such as a solenoid replacement or wiring repairs can range from $100 to $300, while labor costs may add an additional $100 to $200 to the total repair bill. However, it's important to note that 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 with local shops for more accurate estimates based on your specific situation.

What does this mean?

Tech Notes for P3428 Dodge

Although in some cases changing the engine oil may fix the problem, usually the Multi Displacement System Solenoid may need to replaced.

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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.

Frequently Asked Questions about P3428 Dodge Code

1. What does the OBDII code P3428 mean on a Dodge vehicle?

P3428 indicates an issue with the Cylinder 4 Deactivation Control Circuit, specifically that the circuit's voltage is higher than expected.

2. What are the common symptoms of the P3428 code in a Dodge?

Symptoms may include reduced engine performance, poor fuel economy, an illuminated check engine light, and possible engine misfires.

3. What causes the P3428 code to be triggered on a Dodge?

Common causes include a faulty cylinder deactivation solenoid, damaged wiring or connectors in the circuit, low oil pressure, or a malfunctioning powertrain control module (PCM).

4. Can low oil pressure cause the P3428 code on a Dodge?

Yes, low oil pressure can prevent proper operation of the cylinder deactivation system and trigger the P3428 code.

5. How can I diagnose the P3428 code in my Dodge?

Start by using an OBDII scanner to confirm the code, then inspect the wiring and connectors for cylinder 4’s deactivation solenoid. Check the solenoid itself and test for proper oil pressure.

6. Is it safe to drive with the P3428 code on a Dodge?

Driving with the P3428 code is not recommended, as it can lead to reduced performance, increased emissions, and potential engine damage if the issue is not addressed.

7. How do you fix the P3428 code on a Dodge?

Repairs may involve replacing the cylinder 4 deactivation solenoid, repairing or replacing damaged wiring, addressing low oil pressure, or reprogramming the PCM if necessary.

8. Can a dirty or clogged oil passage cause the P3428 code?

Yes, a clogged oil passage can restrict oil flow to the cylinder deactivation system, potentially causing the P3428 code.

9. How much does it typically cost to fix the P3428 code on a Dodge?

Repair costs can vary, but replacing a cylinder deactivation solenoid typically ranges from $150 to $400, depending on parts and labor.

10. Will clearing the P3428 code with a scanner fix the problem?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.

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