P2007 – Intake Manifold Runner Control Stuck Closed (Bank 2)

Urgency Assessment

The P2007 code is not typically considered an emergency condition, but it should not be ignored. While you can continue driving for a short period, it's advisable to have the issue addressed promptly to prevent potential engine performance degradation and increased fuel consumption. However, if you notice severe symptoms such as significant power loss or engine misfires, it's best to have the vehicle towed to a repair facility.

Code Specifics

P2007 is defined as "Intake Manifold Runner Control Stuck Closed Bank 2". This code is triggered when the Powertrain Control Module (PCM) detects that the intake manifold runner control for bank 2 is stuck in the closed position. The PCM monitors the position of the intake manifold runners through various sensors, including the Manifold Absolute Pressure (MAP) sensor and Manifold Air Temperature sensor. When the PCM commands the runners to open but doesn't detect the expected changes in pressure or temperature, it sets the P2007 code.

Universality

P2007 is a generic powertrain code applicable to vehicles manufactured from 1996 onwards equipped with OBD-II systems. While the basic definition remains consistent across different makes and models, the specific components, diagnostic procedures, and repair methods may vary depending on the vehicle manufacturer.

Components Involved

The main components associated with the P2007 code include:

1. Intake Manifold Runner Control (IMRC) system
2. IMRC actuator or solenoid
3. IMRC position sensor
4. Intake manifold runners (flaps)
5. Powertrain Control Module (PCM)
6. Manifold Absolute Pressure (MAP) sensor
7. Manifold Air Temperature sensor

The IMRC system is designed to optimize engine performance by adjusting the length and volume of the intake runners based on engine speed and load. At lower RPMs, the runners are typically closed to increase air velocity and improve low-end torque. At higher RPMs, they open to allow for increased airflow and better high-end power.

Common Causes

The most frequent reasons for the P2007 code include:

1. Failed IMRC actuator or solenoid
2. Faulty IMRC position sensor
3. Mechanical failure of the intake manifold runners (binding or stuck flaps)
4. Carbon buildup on the IMRC flaps or intake manifold ports
5. Blocked vacuum lines (for vacuum-operated systems)
6. Wiring issues in the IMRC control circuit
7. Corroded IMRC actuator connector
8. Faulty PCM (rare)

Diagnostic Procedure

To diagnose the P2007 code, follow these steps:

1. Connect an OBD-II scanner and retrieve all stored codes and freeze frame data.
2. Clear the codes and test drive the vehicle to see if the code resets.
3. Perform a visual inspection of the intake manifold, IMRC actuator, and related wiring for obvious signs of damage or corrosion.
4. Check for any relevant Technical Service Bulletins (TSBs) for the specific vehicle make and model.
5. Use a digital multimeter to test the resistance of the IMRC actuator solenoid and position sensor. Compare readings to manufacturer specifications.
6. Inspect the intake manifold runners for carbon buildup or mechanical binding.
7. Test the continuity and resistance of the IMRC control circuit wiring.
8. Use a scan tool to command the IMRC actuator and observe its operation.
9. If all other tests pass, consider testing the MAP sensor and Manifold Air Temperature sensor.

Solutions

Potential fixes for the P2007 code include:

1. Replacing the faulty IMRC actuator or solenoid
2. Cleaning carbon deposits from the intake manifold runners
3. Repairing or replacing damaged wiring in the IMRC control circuit
4. Replacing a faulty IMRC position sensor
5. Clearing blocked vacuum lines (for vacuum-operated systems)
6. In severe cases, replacing the entire intake manifold assembly

Preventive Measures

To help prevent future occurrences of the P2007 code:

1. Use high-quality fuel and change the engine oil regularly to reduce carbon buildup.
2. Perform periodic intake system cleaning.
3. Inspect and clean electrical connections in the engine bay to prevent corrosion.
4. Address any performance issues promptly to avoid strain on the IMRC system.

Repair Costs

Repair costs can vary significantly depending on the root cause and the vehicle make and model. Estimated costs:

• IMRC actuator replacement: $150-$400 USD (€125-€335)
• Intake manifold cleaning: $100-$300 USD (€85-€250)
• Wiring repair: $100-$300 USD (€85-€250)
• Complete intake manifold replacement: $500-$1500 USD (€420-€1260)

Labor costs typically range from $80-$150 USD (€67-€125) per hour.

DIY Repair Guide

For experienced mechanics attempting a DIY repair:

1. Locate the IMRC actuator, typically mounted on or near the intake manifold.
2. Disconnect the battery before working on electrical components.
3. Remove any obstructions to access the IMRC system.
4. Disconnect the electrical connector from the IMRC actuator.
5. Remove the mounting bolts and extract the actuator.
6. Install the new actuator, ensuring proper alignment.
7. Reconnect the electrical connector and any removed components.
8. Clear the code and test drive the vehicle.

Related Issues

Other codes often associated with P2007 include:

• P2006 (Intake Manifold Runner Control Stuck Closed Bank 1)
• P2008 (Intake Manifold Runner Control Circuit/Open Bank 2)
• P0171 or P0174 (System Too Lean Bank 1 or Bank 2)
• P0101 (Mass Air Flow Sensor Circuit Range/Performance Problem)

These codes may indicate broader issues with the intake or fuel system that should be addressed concurrently.

Frequently Asked Questions About P2007

What does the P2007 code mean?

P2007 stands for “Intake Manifold Runner Control Stuck Closed Bank 2”. It indicates that the intake manifold runner control for bank 2 is stuck in the closed position.

Is it safe to drive with a P2007 code?

While you can drive short distances, it’s not recommended for extended periods. The code can cause reduced engine performance and fuel efficiency. It’s best to have it addressed promptly.

What are the common symptoms of a P2007 code?

Common symptoms include reduced engine power, poor fuel economy, rough idling, and engine surging. You may also notice the check engine light illuminated.

What causes a P2007 code?

Common causes include a failed IMRC actuator or solenoid, faulty IMRC position sensor, mechanical failure of intake manifold runners, carbon buildup, blocked vacuum lines, or wiring issues in the IMRC control circuit.

How is a P2007 code diagnosed?

Diagnosis typically involves scanning for codes, inspecting the IMRC system visually, performing electrical tests on the IMRC control circuit, and checking for carbon buildup or mechanical binding in the intake manifold runners.

Can I diagnose a P2007 code myself?

While some basic checks can be done, proper diagnosis often requires specialized tools and knowledge. It’s usually best to have a professional mechanic diagnose this code.

How is a P2007 code fixed?

Fixes can range from replacing the IMRC actuator or solenoid, cleaning carbon deposits, repairing wiring, or in severe cases, replacing the entire intake manifold assembly.

What parts are typically involved in a P2007 code repair?

Common parts include the IMRC actuator, IMRC position sensor, intake manifold runners, and related wiring or vacuum lines.

How much does it cost to repair a P2007 code?

Costs can vary widely depending on the root cause and vehicle make/model. Repairs can range from $150 to $1500 USD, not including labor costs.

Can a P2007 code clear itself?

While it’s possible for the code to clear temporarily, if the underlying issue isn’t resolved, it will likely return.

What’s the difference between P2006 and P2007 codes?

P2006 refers to the intake manifold runner control stuck closed on Bank 1, while P2007 refers to the same issue on Bank 2.

How does the IMRC system affect engine performance?

The IMRC system optimizes engine performance by adjusting the length and volume of intake runners based on engine speed and load, improving both low-end torque and high-end power.

Can carbon buildup cause a P2007 code?

Yes, carbon buildup on the IMRC flaps or intake manifold ports can cause the runners to stick, triggering the P2007 code.

How often should the IMRC system be serviced?

There’s no set interval for IMRC system service. However, regular engine maintenance and using high-quality fuel can help prevent issues.

Can a faulty MAF or MAP sensor cause a P2007 code?

While not a direct cause, faulty MAF or MAP sensors can contribute to improper IMRC operation, potentially leading to a P2007 code.

Is the P2007 code specific to certain vehicle makes or models?

No, P2007 is a generic OBD-II code that can appear in any vehicle equipped with an IMRC system, regardless of make or model.

Can weather conditions affect the occurrence of a P2007 code?

Extreme temperatures or humidity can potentially exacerbate existing issues with the IMRC system, but they’re not typically the root cause of a P2007 code.

What other codes often appear alongside P2007?

P2006 (Bank 1 equivalent), P2008 (IMRC Circuit Open Bank 2), and lean condition codes like P0171 or P0174 may appear alongside P2007.

Can I prevent P2007 codes from occurring?

Regular maintenance, using quality fuel, and addressing performance issues promptly can help prevent P2007 codes. However, some causes may be unavoidable due to normal wear and tear.

If I replace the IMRC actuator, do I need to reprogram the PCM?

In most cases, replacing the IMRC actuator doesn’t require PCM reprogramming. However, always consult your vehicle’s service manual or a professional mechanic to be sure.

As a mechanic in our workshop, I’ve noticed that the P2007 code is particularly common among certain European car makes. We’ve seen it frequently in Volkswagen and Audi models, especially those with 2.0L TDI engines. BMW vehicles with N47 and N57 diesel engines also tend to trigger this code more often than others. In our experience, the issue is often related to carbon buildup on the intake manifold runners or faulty actuators. While we do see it in some American and Asian vehicles, it’s not nearly as prevalent as in these European models. Addressing the problem usually involves cleaning the intake system or replacing the runner control actuator, depending on the specific cause.