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Engine-Codes – Generic – P2018

P2018 Code - Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1

Quick Answer

The P2018 diagnostic trouble code (DTC) indicates that there is an issue with the Intake Manifold Runner Position Sensor/Switch Circuit on Bank 1 of the engine. Common causes include Faulty intake manifold runner position sensor, Wiring or connector issues in the sensor circuit, 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
P2018 indicates Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1.
Common causes
Common causes include Faulty intake manifold runner position sensor, Wiring or connector issues in the sensor circuit, 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 19, 2024
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Code P2018 Description

The P2018 diagnostic trouble code (DTC) indicates that there is an issue with the Intake Manifold Runner Position Sensor/Switch Circuit on Bank 1 of the engine. This sensor is responsible for monitoring the position of the intake manifold runner, which controls the airflow into the engine. The intake manifold runner helps optimize engine performance by adjusting the length of the intake manifold runners based on engine speed and load conditions.

OBDII Code P2018 - Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1
P2018 Code - Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1

Common Causes of P2018

  1. Faulty intake manifold runner position sensor
  2. Wiring or connector issues in the sensor circuit
  3. Carbon buildup in the intake manifold
  4. Vacuum leaks in the intake system
  5. Issues with the intake manifold runner control solenoid

Symptoms of P2018

  1. Rough idling or engine misfires
  2. Reduced engine power
  3. Hesitation or stumbling during acceleration
  4. Stalling or difficulty starting the engine
  5. Decreased fuel efficiency

How to Fix P2018

  1. Diagnose the exact cause of the issue by performing a thorough inspection of the intake manifold runner position sensor, wiring, and related components.
  2. Replace the faulty intake manifold runner position sensor if necessary.
  3. Check and repair any damaged wiring or connectors in the sensor circuit.
  4. Clean the intake manifold and remove any carbon buildup that may be affecting the sensor's operation.
  5. Test the intake manifold runner system to ensure proper functionality before clearing the DTC.

Cost to Fix P2018

The typical repair costs for addressing a P2018 code can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the cost of replacing the intake manifold runner position sensor and addressing any related wiring or vacuum leaks can range from $200 to $500. However, it is recommended to check with local auto repair shops for a more accurate estimate based on your vehicle make and model. Additionally, diagnostic time and labor rates can impact the final cost of the repair.

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Code P2018 Information for Specific Makes

  • P2018 Chrysler — Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1
  • P2018 Dodge — Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1
  • P2018 Jeep — Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1
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 P2018 Code

1. What are the common symptoms of OBDII code P2018?

The common symptoms of OBDII code P2018 include rough idling, engine misfires, decreased fuel efficiency, and a noticeable decrease in engine performance.

2. What can cause the Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1 code P2018?

The P2018 code can be caused by a faulty intake manifold runner position sensor/switch, damaged wiring or connectors related to the sensor, or a problem with the intake manifold itself.

3. How can I diagnose the cause of OBDII code P2018?

To diagnose the cause of the P2018 code, you can start by visually inspecting the intake manifold runner position sensor and its wiring for any visible damage. Using a multimeter, you can test the sensor's resistance and voltage to determine if it is functioning properly.

4. Can I drive my vehicle with OBDII code P2018?

It is not recommended to drive your vehicle with the P2018 code present, as it can lead to further damage to the engine and decrease fuel efficiency. It is best to address the issue promptly to prevent any potential complications.

5. How can I repair OBDII code P2018?

Repairing the P2018 code may involve replacing the intake manifold runner position sensor/switch, repairing any damaged wiring or connectors, or cleaning the intake manifold. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.

6. Are there any DIY tips for fixing OBDII code P2018?

If you are familiar with automotive repairs, you can attempt to inspect and clean the intake manifold runner position sensor/switch and its connectors to see if that resolves the issue. However, if the problem persists, it is best to seek professional help.

7. Can a dirty intake manifold cause OBDII code P2018?

Yes, a dirty or clogged intake manifold can restrict airflow and cause issues with the intake manifold runner position sensor/switch, leading to the P2018 trouble code. Regular maintenance, such as cleaning the intake manifold, can help prevent this issue.

8. How urgent is it to address OBDII code P2018?

While your vehicle may still be operable with the P2018 code, it is important to address the issue promptly to prevent potential engine damage and ensure optimal performance. Ignoring the code can lead to more severe problems down the line.

9. Can a loose or disconnected vacuum hose cause OBDII code P2018?

Yes, a loose or disconnected vacuum hose can disrupt the intake manifold runner system's operation, triggering the P2018 trouble code. Checking for any loose or disconnected hoses and reattaching them securely may help resolve the issue.

10. Is OBDII code P2018 a common problem in specific vehicle makes and models?

OBDII code P2018 related to the intake manifold runner position sensor/switch circuit intermittent Bank 1 can be a common issue in vehicles with variable intake manifolds, especially in certain models from manufacturers like Volkswagen, Audi, and Ford.

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