P2004 Mercury Code - Intake Manifold Runner Control Stuck Open Bank 1
Quick Answer
The P2004 diagnostic trouble code for Mercury vehicles indicates that the intake manifold runner control (IMRC) is stuck open on Bank 1. Common causes include Faulty IMRC actuator, Carbon buildup in the intake manifold, Wiring or electrical issues. 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
- P2004 Mercury indicates Intake Manifold Runner Control Stuck Open Bank 1.
- Common causes
- Common causes include Faulty IMRC actuator, Carbon buildup in the intake manifold, Wiring or electrical issues.
- 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 P2004 Mercury Description
The P2004 diagnostic trouble code for Mercury vehicles indicates that the intake manifold runner control (IMRC) is stuck open on Bank 1. The intake manifold runner control is responsible for adjusting the length of the intake runners to optimize airflow into the engine, improving performance and fuel efficiency. When the IMRC is stuck open, it can lead to a decrease in engine performance, reduced fuel efficiency, and potential drivability issues.
Common Causes of P2004 Mercury
- Faulty IMRC actuator
- Carbon buildup in the intake manifold
- Wiring or electrical issues
- Vacuum leaks in the intake system
- ECM software issues
Symptoms of P2004 Mercury
- Rough idling or stalling
- Decreased engine power and acceleration
- Reduced fuel efficiency
- Illumination of the check engine light
- Increased emissions
How to Fix P2004 Mercury
- Diagnose the issue using a scan tool to confirm the P2004 code and inspect the IMRC system for any visible damage or obstructions.
- Clean the intake manifold and IMRC valves to remove any carbon buildup that may be causing the valves to stick open.
- Test the IMRC actuator and wiring for proper operation and replace any faulty components as needed.
- Check for vacuum leaks in the intake system and repair or replace any damaged hoses or connections.
- Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.
Cost to Fix P2004 Mercury
The cost of repairing a P2004 code for Mercury vehicles can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, repairing a stuck open IMRC can range from $200 to $500, including parts and labor. However, it is important to note that prices may vary based on location, vehicle make and model, and the extent of the repairs needed. It is advisable to contact local auto repair shops for a more accurate estimate based on the specific circumstances.
Tech Notes for P2004 Mercury
2006 Mercury Mountaineer Factory Service Bulletin OBDII Code P2004
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