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P1518 Ford Code - Intake Manifold Runner Control Stuck Open

Quick Answer

The P1518 Ford code indicates that the Intake Manifold Runner Control (IMRC) is stuck open. Common causes include Faulty IMRC actuator, Broken linkage between the actuator and intake manifold, Carbon buildup in the intake manifold. 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 IMRC actuator, Broken linkage between the actuator and intake manifold, Carbon buildup in the intake manifold.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P1518 Ford Description

The P1518 Ford code indicates that the Intake Manifold Runner Control (IMRC) is stuck open. The IMRC system is responsible for optimizing airflow into the engine by adjusting the length of the intake manifold runners. When the IMRC is stuck open, it can lead to poor engine performance, reduced fuel efficiency, and increased emissions. This issue can be caused by a variety of factors, such as a faulty IMRC actuator, a broken linkage, or carbon buildup in the intake manifold. If left unaddressed, the continuous operation of the IMRC in the open position can lead to engine damage over time.

OBDII Code P1518 Ford - Intake Manifold Runner Control Stuck Open
P1518 Ford Code - Intake Manifold Runner Control Stuck Open

Common Causes of P1518 Ford

  1. Faulty IMRC actuator
  2. Broken linkage between the actuator and intake manifold
  3. Carbon buildup in the intake manifold
  4. Wiring or electrical issues
  5. Vacuum leak in the IMRC system

Symptoms of P1518 Ford

  1. Decreased engine performance
  2. Reduced fuel efficiency
  3. Rough idling or stalling
  4. Check Engine Light illuminated
  5. Reduced power output

How to Fix P1518 Ford

  1. Diagnose the issue by checking the IMRC actuator, linkage, and intake manifold for any faults.
  2. Clean the intake manifold and remove any carbon buildup.
  3. Test the IMRC actuator for proper function and replace if necessary.
  4. Inspect the wiring and electrical connections related to the IMRC system.
  5. Reset the engine control module and clear the error code to see if the issue is resolved.

Cost to Fix P1518 Ford

The cost of repairing a P1518 Ford code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. However, it's essential to get a detailed diagnosis from a qualified mechanic to determine the exact repair needed and the associated costs. Remember that labor rates can vary, so it's recommended to get estimates from multiple auto repair shops to find the best deal.

What does this mean?

Tech Notes for P1518 Ford





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




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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.

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  • 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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