AutoCodes – Volvo – P2418 Volvo

P2418 Volvo Code - Leak Diagnostic Unit Valve Signal Missing

Quick Answer

The Diagnostic Trouble Code (DTC) is stored i the Engine Control Module (ECM) registers that the signal from the valve in the pump for the leak diagnostic is missing when the valve is activated. Common causes include Faulty Leak Diagnostic Unit Valve, Leak Diagnostic Unit Valve harness is open or shorted, Leak Diagnostic Unit Valve 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 Volvo indicates Leak Diagnostic Unit Valve Signal Missing.
Common causes: Common causes include Faulty Leak Diagnostic Unit Valve, Leak Diagnostic Unit Valve harness is open or shorted, Leak Diagnostic Unit Valve 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 9,544

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 Volvo Description

The Diagnostic Trouble Code (DTC) is stored i the Engine Control Module (ECM) registers that the signal from the valve in the pump for the leak diagnostic is missing when the valve is activated.

OBDII Code P2418 Volvo - Leak Diagnostic Unit Valve Signal Missing - AutoCodes.com — P2418 Volvo Code - Leak Diagnostic Unit Valve Signal Missing

What does this mean?

What are the Possible Causes of the DTC P2418 Volvo?

Faulty Leak Diagnostic Unit Valve
Leak Diagnostic Unit Valve harness is open or shorted
Leak Diagnostic Unit Valve circuit poor electrical connection

How to Fix the DTC P2418 Volvo?

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 Volvo 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 Volvo code?

Need more information on how to fix the P2418 Volvo code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2418 Volvo code diagnosed by a professional: Find a repair shop in your area

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 Volvo Code

1. What are the common symptoms of OBDII code P2418 in a Volvo?

The common symptoms of P2418 include the check engine light illuminating on the dashboard, poor engine performance, and possible fuel economy issues.

2. What does the OBDII code P2418 indicating a "Leak Diagnostic Unit Valve Signal Missing" mean in a Volvo?

P2418 indicates that there is a problem with the Leak Diagnostic Unit (LDU) valve signal, which is responsible for monitoring the evaporative emissions system in the vehicle.

3. What are the possible causes of OBDII code P2418 in a Volvo?

Possible causes of P2418 include a faulty Leak Diagnostic Unit valve, damaged wiring or connectors in the evaporative emissions system, or a malfunctioning engine control module (ECM).

4. How serious is OBDII code P2418 in a Volvo?

While P2418 may not cause immediate drivability issues, it is important to address this code promptly to ensure the proper functioning of the vehicle's emissions system and overall engine performance.

5. Can I continue driving my Volvo with OBDII code P2418 present?

It is generally not recommended to continue driving your Volvo with an unresolved P2418 code, as it can lead to increased emissions, potential engine damage, and may cause the vehicle to fail an emissions test.

6. How can I diagnose and repair OBDII code P2418 in my Volvo?

Diagnosing and repairing P2418 typically involves inspecting the LDU valve, checking the wiring and connectors for any damage, and testing the ECM to identify the root cause of the signal missing issue.

7. Is it possible to clear OBDII code P2418 in a Volvo by simply resetting the check engine light?

While clearing the check engine light may temporarily remove the code, it is important to address the underlying issue causing P2418 to prevent it from reoccurring and potentially causing further problems.

8. Will OBDII code P2418 cause my Volvo to fail an emissions test?

Yes, OBDII code P2418 can cause your Volvo to fail an emissions test, as it indicates a problem with the vehicle's evaporative emissions system, which is a crucial component for emissions control.

9. How much does it typically cost to fix OBDII code P2418 in a Volvo?

The cost of repairing P2418 can vary depending on the specific cause of the issue, but it may involve replacing the LDU valve, repairing wiring or connectors, or addressing any ECM issues. Costs can range from a few hundred to over a thousand dollars.

10. Can I prevent OBDII code P2418 from occurring in my Volvo?

Regular maintenance, such as checking and replacing the evaporative emissions system components as recommended by the manufacturer, can help prevent issues like P2418 from occurring in your Volvo.