Engine-CodesMercury – P2005 Mercury

P2005 Mercury Code - Intake Manifold Runner Control Stuck Open Bank 2

Quick Answer

The P2005 diagnostic trouble code for a Mercury vehicle indicates that the Intake Manifold Runner Control (IMRC) for Bank 2 is stuck open. Common causes include Stuck IMRC actuator, Faulty IMRC control module, Vacuum leak in the IMRC system. 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
P2005 Mercury indicates Intake Manifold Runner Control Stuck Open Bank 2.
Common causes
Common causes include Stuck IMRC actuator, Faulty IMRC control module, Vacuum leak in the IMRC system.
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.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2005 Mercury Description

The P2005 diagnostic trouble code for a Mercury vehicle indicates that the Intake Manifold Runner Control (IMRC) for Bank 2 is stuck open. The IMRC system is responsible for adjusting the length of the intake manifold runners to optimize airflow and improve engine performance at different RPM ranges. When the IMRC is stuck open, it can disrupt the engine's air-fuel mixture, leading to decreased performance, efficiency, and emissions.

OBDII Code P2005 Mercury - Intake Manifold Runner Control Stuck Open Bank 2
P2005 Mercury Code - Intake Manifold Runner Control Stuck Open Bank 2

Common Causes of P2005 Mercury

  1. Stuck IMRC actuator
  2. Faulty IMRC control module
  3. Vacuum leak in the IMRC system
  4. Electrical issue with IMRC components
  5. Failed IMRC sensor

Symptoms of P2005 Mercury

  1. Decreased acceleration and power
  2. Rough idling or stalling
  3. Reduced fuel efficiency
  4. Engine misfires
  5. Illumination of the Check Engine Light

How to Fix P2005 Mercury

  1. Diagnose the issue using a scan tool to confirm the P2005 code and inspect the IMRC system for any visible damage.
  2. Test the IMRC actuator, control module, and sensor for proper operation and replace any faulty components.
  3. Check for vacuum leaks in the IMRC system and repair or replace any damaged hoses or gaskets.
  4. Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.
  5. If necessary, perform a relearn procedure to calibrate the IMRC system and ensure proper functionality.

Cost to Fix P2005 Mercury

The typical repair costs for addressing a P2005 code on a Mercury vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, replacing components such as the IMRC actuator, control module, or sensor can range from $200 to $500, including parts and labor. Additional costs may apply if there are other underlying issues contributing to the code. It's recommended to consult with a professional mechanic for an accurate estimate based on your vehicle's make and model. Labor rates at auto repair shops can range from $80 to $150 per hour, so it's important to consider these factors when budgeting for the repair.

Tech Notes for P2005 Mercury

There is a Factory Service Bulletin for the 2006 Mercury Mountaineer:

2006 Mercury Mountaineer Factory Service Bulletin OBDII Code P2005

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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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