P2014 – Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1)

What is the Urgency of P2014 Code?

P2014 is a diagnostic trouble code (DTC) for "Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1)". When this code is triggered, it indicates an issue with the intake manifold runner control (IMRC) system.

In most cases, you can continue driving the vehicle a short distance with a P2014 code. However, it's recommended to diagnose and repair the issue as soon as possible to prevent potential damage to the engine and restore optimal performance. Avoid long trips or heavy towing until the problem is fixed.

Technical Details of P2014 Code

The P2014 code is a generic powertrain code that applies to many vehicles equipped with an IMRC system, particularly models from Audi, Volkswagen, BMW, Ford, GM, Nissan, Infiniti and more. The exact definition and diagnostic steps may vary slightly between makes and models.

The IMRC system consists of an actuator and position sensor that work together to adjust the intake runner length and geometry based on engine RPM. This optimizes air flow into the cylinders for improved power and efficiency. The PCM monitors the IMRC sensor signal and triggers a P2014 when the voltage is out of the expected range, indicating a problem with the sensor, wiring, actuator, or intake manifold.

Common Causes of P2014 Code

Potential causes of a P2014 code include:

• Faulty IMRC position sensor
• Damaged wiring or poor electrical connection to the sensor
• Intake manifold runner control actuator failure
• Carbon buildup or mechanical binding of the IMRC valve/flaps
• Vacuum leaks in the intake manifold
• Malfunctioning PCM (rare)

Symptoms of P2014 Code

Symptoms you may notice with a P2014 code:

• Check engine light is on
• Rough idle or stalling at low RPM
• Reduced engine power, especially at higher RPM
• Decreased fuel economy
• Difficulty starting the engine

Diagnosing P2014 Code

To properly diagnose a P2014 DTC, follow these steps:

1. Use an OBD-II scanner to check for any other codes. Address codes related to the intake or fuel system first.

2. Visually inspect the wiring and electrical connections to the IMRC sensor. Look for damaged, loose or corroded wires, and repair as needed.

3. Remove the IMRC sensor and inspect for carbon buildup or binding. Clean or replace the sensor if necessary.

4. With the sensor connected, use a multimeter to check the sensor signal voltage while revving the engine. Compare to manufacturer specs.

5. Check the intake manifold for vacuum leaks and the IMRC valve/flaps for carbon deposits or sticking. Clean or replace damaged components.

6. If the code persists after repairs, suspect a faulty PCM.

Repairing P2014 Code

Common repairs for a P2014 code include:

• Replacing the IMRC position sensor ($80-$120 USD / €75-€110 EUR)
• Cleaning the IMRC valve and intake manifold ($50-$150 / €45-€140)
• Replacing the intake manifold runner control actuator ($300-$600 / €280-€550)
• Repairing damaged wiring ($50-$200 / €45-€185 depending on extent)

Preventing P2014 Code

To help prevent a P2014 code from occurring:

• Follow the manufacturer's recommended maintenance schedule for intake system cleaning/service
• Use high quality fuel and change the engine air filter regularly
• Address any intake manifold leaks or damage promptly
• Avoid aftermarket modifications that may affect the IMRC system

Related Codes

Other codes that may appear along with P2014:

• P2008 – Intake Manifold Runner Control Circuit/Open Bank 1
• P2017 – Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1
• P2004 – Intake Manifold Runner Stuck Open Bank 1
• P0101 – Mass Air Flow Sensor Circuit Range/Performance

By understanding the P2014 code definition, causes, symptoms, diagnosis and repair, you'll be well equipped to tackle this issue on a variety of vehicle makes and models. As always, consult the factory service information for your specific application to ensure the most accurate diagnostic procedure.

Frequently Asked Questions About P2014 Code

What does the P2014 code mean?

The P2014 code indicates a problem with the Intake Manifold Runner Position Sensor/Switch Circuit on Bank 1. This means there is an issue with the sensor or wiring that monitors the position of the intake manifold runner control (IMRC) valve.

What are the common causes of a P2014 code?

Common causes include:

• Faulty IMRC position sensor
• Damaged wiring or poor electrical connection to the sensor
• IMRC actuator failure
• Carbon buildup or binding of the IMRC valve
• Vacuum leaks in the intake manifold
• Malfunctioning PCM (rare)

What are the symptoms of a P2014 code?

Typical symptoms you may notice:

• Check engine light is on
• Rough idle or stalling at low RPM
• Reduced engine power, especially at higher RPM
• Decreased fuel economy
• Hard starting

Is it safe to drive with a P2014 code?

You can usually drive a short distance with a P2014, but it's best to diagnose and repair the issue promptly to prevent potential engine damage and restore performance. Avoid long trips or towing until fixed.

How do you diagnose a P2014 code?

Diagnosis steps:

1. Scan for other codes and address related faults first
2. Visually inspect wiring and connections to the IMRC sensor
3. Test IMRC sensor signal with a multimeter
4. Check IMRC valve and intake manifold for carbon buildup, binding, or vacuum leaks
5. Verify IMRC actuator operation
6. If no other faults are found, suspect a bad PCM

What repairs are needed to fix a P2014 code?

Fixes may include:

• Replacing the IMRC position sensor
• Repairing damaged wiring
• Cleaning carbon from the IMRC valve and intake manifold
• Replacing the IMRC actuator
• Repairing vacuum leaks
• Reflashing or replacing the PCM

How much does it cost to fix a P2014 code?

Repair costs can range from $80-$120 to replace a sensor up to $300-$600 to replace the IMRC actuator, plus any additional labor to diagnose and repair wiring issues or clean the intake manifold. Total cost depends on the root cause.

Can a P2014 code cause damage to my engine?

Yes, if left unrepaired for an extended period, a faulty IMRC system can cause poor air/fuel mixing, leading to misfires, rough running, catalytic converter damage, and reduced engine life over time.

How often do IMRC system problems occur?

IMRC issues are more common on higher mileage vehicles due to aging sensors and actuators, carbon buildup, and wiring degradation. Problems can start to crop up after 100,000 miles.

What is the IMRC system and what does it do?

The intake manifold runner control system uses motorized valves to adjust the length of the intake runners based on engine RPM. This optimizes air velocity into the cylinders for improved low-end torque and high-RPM power.

Can I replace just the IMRC position sensor or do I need to replace the whole actuator?

In many cases, just replacing the sensor will fix a P2014, but if the actuator is binding or has failed electrically, the whole unit needs to be replaced. Proper diagnosis is key.

How do I test the IMRC position sensor?

With the sensor connected, use a multimeter to check the voltage signal while slowly opening and closing the throttle. The voltage should sweep smoothly from around 0.5V to 4.5V. If the signal is erratic or out of range, the sensor is faulty.

How do I test the IMRC actuator?

Commands can be sent to the IMRC actuator with a scan tool to open and close the valve. If the valve doesn't move, check for 12V power and ground at the actuator connector. If power and ground are good, the actuator is likely bad.

Can carbon buildup cause a P2014 code?

Yes, carbon deposits on the IMRC valve can cause it to stick, bind, or leak. The PCM detects that the valve isn't moving as commanded and sets a P2014. Cleaning the valve and intake manifold can often fix this.

Will cleaning my intake manifold fix a P2014 code?

It depends on the root cause, but if the code is triggered by carbon buildup causing the IMRC valve to stick, then yes, cleaning the intake manifold and valve can often resolve a P2014.

How can I prevent a P2014 code from coming back?

Regular maintenance is key:

• Use high quality fuel and change the air filter regularly
• Follow the manufacturer's PCV system service intervals
• Have the intake manifold and valves cleaned if needed
• Address any oil burning or blowby issues that can accelerate carbon buildup

Is a P2014 code the same on all vehicles?

The generic definition of a P2014 is the same on all makes, but the exact diagnostic and repair steps can vary based on the specific engine design. Always consult the factory service information for the best fix.

Do I need any special tools to diagnose a P2014?

At minimum you'll need an OBD2 scanner to check for codes and view data, and a digital multimeter for testing wiring and sensors. A smoke machine can help find vacuum leaks. More advanced diagnosis may require an oscilloscope and manufacturer-specific tools.

How long does it take to diagnose and repair a P2014 code?

Diagnosis can take anywhere from 30-60 minutes for a basic inspection and sensor test to several hours or more to trace wiring faults or test the actuator. Repair time depends on the issue found, but plan on at least a couple hours to replace sensors or the actuator.

What else should I check if I have a P2014 code?

It's always a good idea to inspect the rest of the intake and PCV system for leaks, damage or heavy carbon buildup. Oil burning, blowby, or boost leaks can all cause increased deposits that gum up the IMRC system over time.