AutoCodes – Dodge – P2418 Dodge

P2418 Dodge Code - Evaporative Emission System Switching Valve Control Circuit/Open

Quick Answer

5 hours after the ignition switch is turned OFF, the leak detection pump creates negative pressure(vacuum) in the EVAP system. Common causes include Faulty Vacuum Pump Module, Vacuum Pump Module harness is open or shorted, Vacuum Pump Module circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P2418 Dodge indicates Evaporative Emission System Switching Valve Control Circuit/Open.
Common causes: Common causes include Faulty Vacuum Pump Module, Vacuum Pump Module harness is open or shorted, Vacuum Pump Module circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,374

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2418 Dodge Description

5 hours after the ignition switch is turned OFF, the leak detection pump creates negative pressure(vacuum) in the EVAP system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. HINT: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the ignition switch is turned OFF, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the ignition switch is turned OFF, the monitor check starts 2.5 hours later.

OBDII Code P2418 Dodge - Evaporative Emission System Switching Valve Control Circuit/Open - AutoCodes.com — P2418 Dodge Code - Evaporative Emission System Switching Valve Control Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P2418 Dodge?

Faulty Vacuum Pump Module
Vacuum Pump Module harness is open or shorted
Vacuum Pump Module circuit poor electrical connection.
Faulty Engine Control Module (ECM)

How to Fix the DTC P2418 Dodge?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2418 Dodge 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 P2418 Dodge Code

What does the OBDII code P2418 mean for a Dodge?

P2418 indicates an issue with the Evaporative Emission System Switching Valve Control Circuit, specifically an open or malfunctioning circuit.

What are the symptoms of the P2418 code in a Dodge vehicle?

Common symptoms include an illuminated check engine light, potential fuel odors, and possible difficulty passing an emissions test.

What causes the P2418 code to trigger?

Typical causes include a faulty evaporative emission (EVAP) switching valve, damaged wiring or connectors in the circuit, or a failed powertrain control module (PCM).

Can I drive my Dodge with a P2418 code?

Driving is usually possible, but it's not recommended to ignore the issue as it can lead to increased emissions and potential long-term damage.

How can I diagnose the P2418 code?

Begin by checking all EVAP system wiring and connectors for damage, test the switching valve for proper operation, and use a scan tool to monitor the circuit's voltage.

What tools are needed to fix the P2418 code?

Basic tools include a multimeter for testing circuits, a scan tool for diagnostics, and potentially replacement parts like the EVAP switching valve.

How much does it cost to fix the P2418 code on a Dodge?

Repair costs can vary but typically range from $100 to $300, depending on whether the issue lies with the switching valve, wiring, or other components.

Is the P2418 code related to emissions testing?

Yes, a P2418 code can cause your Dodge to fail emissions testing due to an EVAP system malfunction.

Can a faulty gas cap cause the P2418 code?

While a loose or damaged gas cap can cause other EVAP-related codes, it is unlikely to cause P2418 directly, which focuses on the switching valve circuit.

How can I prevent the P2418 code from recurring?

Regularly inspect and maintain the EVAP system, ensuring all wiring, connectors, and components like the switching valve are in good condition.