Engine-CodesDodge – P3412 Dodge

P3412 Dodge Code - Cylinder 2 Deactivation Control Circuit High

Quick Answer

The P3412 diagnostic trouble code (DTC) for Dodge vehicles specifically points to an issue with the Cylinder 2 Deactivation Control Circuit being too high. Common causes include Faulty cylinder deactivation solenoid, Wiring issues in the deactivation control circuit, Failed engine control module (ECM). 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
P3412 Dodge indicates Cylinder 2 Deactivation Control Circuit High.
Common causes
Common causes include Faulty cylinder deactivation solenoid, Wiring issues in the deactivation control circuit, Failed engine control module (ECM).
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P3412 Dodge Description

The P3412 diagnostic trouble code (DTC) for Dodge vehicles specifically points to an issue with the Cylinder 2 Deactivation Control Circuit being too high. This code is typically found in vehicles equipped with a cylinder deactivation system, which is designed to improve fuel efficiency by shutting off specific cylinders when they are not needed, such as during light load or cruising conditions.

OBDII Code P3412 Dodge - Cylinder 2 Deactivation Control Circuit High
P3412 Dodge Code - Cylinder 2 Deactivation Control Circuit High

Common Causes of P3412 Dodge

  1. Faulty cylinder deactivation solenoid
  2. Wiring issues in the deactivation control circuit
  3. Failed engine control module (ECM)
  4. Poor electrical connections
  5. Engine oil sludge buildup affecting cylinder deactivation operation

Symptoms of P3412 Dodge

  1. Decreased fuel efficiency
  2. Rough idling or engine vibrations
  3. Engine misfires
  4. Illuminated check engine light
  5. Reduced engine performance

How to Fix P3412 Dodge

  1. Use a scan tool to verify the P3412 code and identify the specific cylinder deactivation control circuit issue.
  2. Inspect the wiring harness and connectors for any damage or loose connections. Repair or replace as necessary.
  3. Test the cylinder deactivation solenoid for proper operation. Replace if faulty.
  4. Check the engine control module (ECM) for any signs of malfunction. If necessary, reprogram or replace the ECM.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P3412 Dodge

The cost of repairing a P3412 code for cylinder 2 deactivation control circuit high can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of parts for this repair could range from $100 to $300, with labor costs adding an additional $100 to $200. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's best to obtain quotes from local shops for a more accurate estimate.

Tech Notes for P3412 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 P3412 Dodge Code

1. What does the OBDII code P3412 mean on a Dodge?

P3412 indicates an issue with the Cylinder 2 Deactivation Control Circuit, specifically a high voltage condition.

2. What are the common symptoms of code P3412 in a Dodge?

Symptoms may include reduced engine performance, poor fuel economy, rough idling, or the check engine light turning on.

3. What causes the P3412 code to appear in a Dodge vehicle?

Common causes include a faulty solenoid, damaged wiring or connectors in the Cylinder 2 Deactivation Circuit, or a problem with the engine control module (ECM).

4. Can I drive my Dodge with the P3412 code active?

Driving with this code active is possible but not recommended, as it could lead to further engine damage or reduced performance.

5. How do you diagnose the P3412 code on a Dodge?

Diagnosis typically involves using a scan tool to confirm the code, inspecting the wiring and connectors, and testing the cylinder deactivation solenoid for proper operation.

6. How can the P3412 code be fixed on a Dodge?

Repairs may involve replacing a faulty solenoid, repairing or replacing damaged wiring, or reprogramming the ECM if needed.

7. How much does it cost to repair the P3412 code on a Dodge?

Repair costs vary but typically range from $100 to $300, depending on whether the issue is a simple wiring repair or a solenoid replacement.

8. Can low oil pressure cause the P3412 code in a Dodge?

Yes, low oil pressure can affect the cylinder deactivation system, potentially triggering the P3412 code.

9. Does the P3412 code affect fuel efficiency in a Dodge?

Yes, since cylinder deactivation improves fuel economy, a malfunction in this system can lead to increased fuel consumption.

10. Can clearing the P3412 code fix the problem in a Dodge?

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

Discuss the causes and fixes for P3412 Dodge OBDII Code

  • I have A Engine "P3412" On My 2005 Dodge Magnum With The 5.7 Hemi, Has Anyone Ever Had This Code Come up before?? & What did You have To Do To Resolve The Issue?? Thank You In Advance