AutoCodes – Ford – P1518 Ford

P1518 Ford Code - Intake Manifold Runner Control Stuck Open

Quick Answer

The Intake Manifold Runner Control (IMRC) is an electrically actuated system consisting of a motorized actuator with an attaching linkage for each housing on each bank. Common causes include Faulty Intake Manifold Runner Control (IMRC) actuator, Intake Manifold Runner Control actuator harness is open or shorted, Intake Manifold Runner Control actuator 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: P1518 Ford indicates Intake Manifold Runner Control Stuck Open.
Common causes: Common causes include Faulty Intake Manifold Runner Control (IMRC) actuator, Intake Manifold Runner Control actuator harness is open or shorted, Intake Manifold Runner Control actuator 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 116,468

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 03, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
Comments
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Code P1518 Ford Description

The Intake Manifold Runner Control (IMRC) is an electrically actuated system consisting of a motorized actuator with an attaching linkage for each housing on each bank. The linkage attaches to the housing butterfly plate levers. Each IMRC housing is an aluminum casting with two intake air passages for each cylinder. One passage is always open, and the other is opened and closed with a butterfly valve plate. The housing uses a return spring to hold the plates closed. The motorized actuator houses internal switches to provide feedback to the Powertrain Control Module (PCM), indicating linkage and plate position. Under about 3000 rpm, the vacuum solenoid will be energized. This will allow the manifold vacuum to be applied and the butterfly valve plates to stay closed. Above approximately 3000 rpm, the vacuum solenoid will be de-energized. This will allow a vacuum to vent from the actuator and the butterfly valve plates to open. The Diagnostic Trouble Code (DTC) sets when the IMRC is commanded close, but the IMRC monitor indicates open.

OBDII Code P1518 Ford - Intake Manifold Runner Control Stuck Open - AutoCodes.com — P1518 Ford Code - Intake Manifold Runner Control Stuck Open

What does this mean?

What are the Possible Causes of the DTC P1518 Ford?

Faulty Intake Manifold Runner Control (IMRC) actuator
Intake Manifold Runner Control actuator harness is open or shorted
Intake Manifold Runner Control actuator circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1518 Ford?

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 does this mean?

Code Tech Notes

2001 Ford Windstar fix for Check Engine Light code P1518 - Intake Manifold Runner Control Stuck Open

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1518 Ford 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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Information for Specific Ford Models

P1518 1997 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 1998 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 1999 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 2000 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 2001 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 2002 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 2003 Ford F150 — Intake Manifold Runner Control Stuck Open
P1518 2001 Ford Windstar — Intake Manifold Runner Control Stuck Open

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 P1518 Ford Code

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johnny
Date: June 6, 2017 at 1:40 am

Where can I find a intake manifold runner control for a 2004 Ford Focus svt 2.0L DOHC? And for cheap. Does anybody know where?

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