AutoCodes – Lexus – P2418 Lexus

P2418 Lexus Code - EVAP System 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 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: P2418 Lexus indicates EVAP System 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: 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.

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Code Popularity 11,037

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 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 Lexus 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 Lexus - EVAP System Valve Control Circuit Open - AutoCodes.com — P2418 Lexus Code - EVAP System Valve Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2418 Lexus?

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 Lexus?

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 Lexus 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.

Need more information about the P2418 Lexus code?

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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 Lexus Code

1. What does the OBDII code P2418 mean on a Lexus?

P2418 indicates that there is an issue with the EVAP (Evaporative Emission Control) system, specifically an open circuit in the EVAP system valve control.

2. What are the common symptoms of the P2418 code on a Lexus?

Symptoms may include an illuminated check engine light, difficulty starting the engine after refueling, reduced fuel efficiency, or a noticeable fuel odor.

3. What causes the P2418 code to appear on a Lexus?

Common causes include a faulty EVAP system vent valve, damaged wiring or connectors in the vent valve circuit, a malfunctioning ECM (Engine Control Module), or corrosion in the electrical components.

4. Can I drive my Lexus with the P2418 code?

While you can drive with this code, it is not recommended. It may lead to increased emissions and reduced fuel efficiency, and over time, it could cause further damage to the EVAP system.

5. How is the P2418 code diagnosed on a Lexus?

A technician will use an OBDII scanner to confirm the code, then check the EVAP vent valve, its wiring, and connectors for damage, corrosion, or disconnection. They may also test the ECM if no other issues are found.

6. How do I fix the P2418 code on a Lexus?

Repairs may include replacing the EVAP vent valve, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or reprogramming or replacing the ECM if necessary.

7. What is the EVAP system vent valve's role in my Lexus?

The EVAP vent valve controls the flow of fuel vapors from the gas tank to the charcoal canister, preventing harmful emissions from being released into the atmosphere.

8. How much does it typically cost to repair a P2418 code on a Lexus?

The repair cost can range from $150 to $500, depending on whether the issue is with the vent valve, wiring, or ECM. Labor costs and parts pricing will vary by location and vehicle model.

9. Can a loose gas cap cause the P2418 code on a Lexus?

While a loose gas cap can trigger other EVAP-related codes, it is unlikely to cause the P2418 code, which is specific to the vent valve circuit.

10. How can I prevent the P2418 code from occurring on my Lexus?

Regular maintenance, including inspecting the EVAP system components for wear or damage and addressing issues like corrosion promptly, can help prevent this code.