AutoCodesJeep – P3418 Jeep

P3418 Jeep Code - Cylinder 3 Deactivation Control Performance

Quick Answer

When all the criteria has been met,power is supplied to each Multi-Displacement System (MDS) Solenoid when engine is making a transition from 8 cylinder mode to 4 cylinder mode. Common causes include Low oil pressure, Restricted oil passage, Engine mechanical condition. 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
P3418 Jeep indicates Cylinder 3 Deactivation Control Performance.
Common causes
Common causes include Low oil pressure, Restricted oil passage, Engine mechanical condition.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,347
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 05, 2019
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Code P3418 Jeep Description

When all the criteria has been met,power is supplied to each Multi-Displacement System (MDS) Solenoid when engine is making a transition from 8 cylinder mode to 4 cylinder mode. By actuating the solenoid, oil pressure is raised to the pair of lifter that coincide with each particular solenoid. The oil pressure pushes in the locking pins that allows the lifter to collapse, decoupling the valves and camshafts.
OBDII Code P3418 Jeep - Cylinder 3 Deactivation Control Performance - AutoCodes.com
P3418 Jeep Code - Cylinder 3 Deactivation Control Performance

What are the Possible Causes of the DTC P3418 Jeep?

  • Low oil pressure
  • Restricted oil passage
  • Engine mechanical condition
  • Faulty Multiple Displacement System (MDS) Solenoid
  • Multiple Displacement System (MDS) Solenoid harness is open or shorted
  • Multiple Displacement System (MDS) Solenoid circuit poor electrical connection

How to Fix the DTC P3418 Jeep?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P3418 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 P3418 Jeep Code

What does the OBDII code P3418 mean for a Jeep?

P3418 indicates a problem with the deactivation control performance of cylinder 3, typically within the engine's cylinder deactivation system (MDS).

What are the common symptoms of code P3418 in a Jeep?

Symptoms may include a check engine light, rough idling, reduced engine performance, decreased fuel efficiency, or noticeable misfires.

What causes the P3418 code to appear in a Jeep?

Possible causes include a faulty cylinder deactivation solenoid, low oil pressure, clogged oil passages, damaged wiring or connectors, or issues with the PCM.

Can low oil levels trigger the P3418 code?

Yes, low oil levels or poor oil quality can affect the cylinder deactivation system and trigger this code.

How is the P3418 code diagnosed in a Jeep?

Diagnosis typically involves scanning for codes, inspecting the cylinder 3 deactivation solenoid, checking oil levels and quality, and testing the wiring and PCM.

Can I drive my Jeep with the P3418 code?

Driving with this code is not recommended, as it can lead to reduced performance, increased fuel consumption, and potential engine damage over time.

How do you fix the P3418 code on a Jeep?

Repairs may involve replacing the cylinder 3 deactivation solenoid, cleaning oil passages, changing the oil, fixing wiring issues, or reprogramming the PCM.

What is the cylinder deactivation system in a Jeep?

The cylinder deactivation system, also known as MDS, temporarily shuts down specific cylinders under light load conditions to improve fuel efficiency.

Is the P3418 code covered under warranty for Jeeps?

Warranty coverage depends on the vehicle’s warranty terms and mileage. Consult your Jeep dealership to confirm.

Can worn engine oil cause the P3418 code?

Yes, worn or degraded engine oil can lead to low oil pressure, affecting the cylinder deactivation system and triggering the code.

Discuss the causes and fixes for P3418 Jeep OBDII Code

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