P2015 – Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)

What does the P2015 code mean?

The P2015 code indicates that the Powertrain Control Module (PCM) has detected that the Bank 1 intake manifold runner position sensor signal is out of range. This sensor determines the position of the intake manifold runner valves, which control the engine's air intake.

Urgency and Drivability

When the P2015 code is triggered, you will typically see an illuminated check engine light. In most cases, you can continue driving the vehicle with this code present without an immediate major decrease in performance. However, you may notice symptoms like:

• Decreased engine performance
• Reduced fuel efficiency (increased emissions)
• Rough or erratic idle

It's best to diagnose and fix the P2015 code when possible to prevent potential long-term damage, but it's not typically an emergency that requires immediately stopping driving.

Applicability

The P2015 code is a generic powertrain code that applies to many makes and models. However, some manufacturers like Volkswagen have released specific technical service bulletins (TSBs) to address common P2015 issues in their vehicles.

Parts Involved

The key components related to the P2015 code are:

• Intake manifold runner valves (flaps)
• Intake manifold runner position sensor
• Intake manifold runner control (IMRC) actuator/solenoid
• Wiring and vacuum lines connecting these components

The intake runner valves are located inside the intake manifold and open/close to vary the length of the intake runners. This optimizes air flow and power delivery based on engine speed. The position sensor monitors the angle of these valves. The IMRC actuator or solenoid physically moves the valves based on signals from the PCM.

Common Causes

Some common causes that can trigger the P2015 code include:

1. Faulty intake manifold runner position sensor
2. Faulty IMRC actuator/solenoid
3. Damaged, loose, or clogged vacuum lines to the IMRC system
4. Wiring issues (open or short circuits) in the sensor or actuator circuits
5. Mechanical problems with the intake runner valve linkage or manifold

Diagnosis Steps

To properly diagnose the root cause of the P2015 code:

1. Scan for codes and see if P2015 is current or pending. Clear the code and see if it comes back.
2. Visually inspect the wiring and vacuum lines for obvious damage or loose connections. Repair as needed.
3. Check for any applicable TSBs for your vehicle to help narrow down the issue.
4. Using a scan tool, monitor the IMRC system operation and see if the sensor readings and actuator operation seem normal.
5. Test the wiring of the position sensor and IMRC actuator for open or short circuits using a digital multimeter (DMM). Repair wiring or replace faulty sensor/actuator as needed.
6. For vacuum-operated systems, use a hand vacuum pump to test the operation of the intake runner valves.
7. If the wiring and components test okay, check the intake manifold and runner valve linkage for binding or damage. Replace intake manifold if defective.

Repair Costs

The cost to repair the P2015 code can vary widely depending on the root cause:

• Intake manifold runner position sensor: $85-$200 (€80-€185)
• IMRC actuator/solenoid: $200-$600 (€185-€550)
• Intake manifold: $600-$1000 (€550-€925)
• Vacuum lines: $5-$50 (€5-€45)
• Wiring repairs: $0 (DIY) to $300 (€275) at a shop

Repair costs at a dealership will typically be on the higher end of those ranges. DIYers can save on labor for simpler repairs.

Prevention

To help prevent P2015 issues:

• Stick to the recommended maintenance schedule for air filter and spark plug changes
• Address any rough running or long crank issues promptly
• Inspect vacuum lines and wiring during routine services and replace deteriorated components
• Use quality replacement parts if repairs are needed

Related Codes

Some other codes that may appear along with P2015 include:

• P2008 – Intake Manifold Runner Control Circuit Open Bank 1
• P2017 – Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1
• P2019 – Intake Manifold Runner Position Sensor/Switch Circuit High Bank 1

By understanding what the P2015 code means, its potential causes, and diagnostic steps, you'll be well-equipped to resolve this issue if it appears on your vehicle. Proper diagnosis and repair can restore optimal engine performance and efficiency.

Frequently Asked Questions About P2015

What does the OBD-II code P2015 mean?

Code P2015 stands for “Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1).” It indicates that the Powertrain Control Module (PCM) has detected an issue with the intake manifold runner position sensor signal being out of the expected range on bank 1 of the engine.

What are the common symptoms of code P2015?

Common symptoms include:

• Illuminated check engine light
• Decreased engine performance
• Reduced fuel efficiency
• Rough or erratic idle
• Failed emissions test

How serious is code P2015? Is it safe to drive with this code?

Code P2015 itself is not extremely serious, and it’s generally okay to drive short distances with it. However, you may experience decreased performance and fuel efficiency. It’s best to diagnose and fix the issue promptly to prevent potential long-term engine damage.

What are the common causes of code P2015?

Potential causes include:

• Faulty intake manifold runner position sensor
• Damaged wiring or poor electrical connections to the sensor
• Faulty intake manifold runner control (IMRC) actuator or solenoid
• Vacuum leaks in the IMRC system
• Obstructed or damaged intake manifold runners
• Faulty PCM (rare)

How do you diagnose the root cause of code P2015?

Diagnosis steps include:

1. Visually inspect wiring and vacuum hoses for obvious damage.
2. Use a scan tool to check for other codes and monitor IMRC sensor data.
3. Test the wiring and connections to the position sensor and IMRC actuator.
4. Test the operation of the IMRC actuator/solenoid.
5. Inspect the intake manifold runners for obstruction or damage.
6. If no other causes are found, the PCM may be faulty.

Can code P2015 cause a failed emissions test?

Yes, a faulty IMRC system can cause increased emissions and a failed smog test. The IMRC system is important for optimizing the air-fuel mixture.

Is code P2015 specific to certain makes or models?

Code P2015 is a generic code that can occur in many different vehicle makes and models. However, some vehicles like Volkswagens and Audis are more prone to IMRC system issues.

What repairs are commonly needed to fix code P2015?

Common repairs include:

• Replacing a faulty intake manifold runner position sensor
• Repairing damaged wiring or connectors to the sensor or actuator
• Replacing a faulty IMRC actuator or solenoid
• Repairing vacuum leaks in the IMRC system hoses
• Cleaning or replacing obstructed/damaged intake manifold runners
• Reflashing or replacing the PCM (rare)

How much does it typically cost to fix code P2015?

The cost to fix code P2015 can vary widely depending on the root cause:

• Intake manifold runner position sensor: $85-$200
• IMRC actuator/solenoid: $200-$600
• Intake manifold runner replacement: $400-$1000+
• Wiring repairs: $0-$300
• PCM replacement: $500-$1500

Can I diagnose and fix code P2015 myself?

Code P2015 diagnosis and repair can be tricky, as it requires a scan tool and advanced knowledge of engine management systems. If you have the right tools and skills, you may be able to tackle it. However, it’s usually best left to a professional technician.

How can I prevent code P2015 from occurring?

Some prevention tips include:

• Keeping up with scheduled maintenance like air filter changes
• Addressing any rough running or long crank issues promptly
• Regularly inspecting vacuum hoses and wiring for wear
• Using high-quality replacement parts if repairs are needed

Can low-quality fuel cause code P2015?

Not directly. Code P2015 is more often caused by component failures or vacuum leaks. However, low-quality fuel can cause rough running which puts extra stress on the IMRC system over time.

Can code P2015 occur on both banks of a V-type engine?

Yes, if the vehicle has separate intake manifolds for the left and right cylinder banks, a runner control issue could occur on either bank. Code P2016 indicates a problem on bank 2.

What is the difference between code P2015 and similar codes like P2008?

While P2015 indicates a range/performance issue with the position sensor, other similar codes point to different problems:

• P2008 – Intake Manifold Runner Control Circuit Open
• P2017 – Intake Manifold Runner Position Sensor Circuit Low
• P2019 – Intake Manifold Runner Position Sensor Circuit High

Can a malfunctioning throttle body cause code P2015?

Not directly, as the throttle body is a separate component from the intake manifold runners. However, a faulty throttle body can cause poor running conditions that stress the IMRC system.

Is the intake manifold runner control system covered under powertrain warranty?

In most cases, yes. The IMRC system is considered an integral part of the engine management system and should be covered under the emissions or powertrain warranty. However, warranty coverage varies by manufacturer and vehicle age/mileage.

What is the typical lifespan of an intake manifold runner control actuator?

On average, an IMRC actuator or solenoid should last about 100,000 miles. However, factors like short trip driving, poor maintenance, and engine issues can cause premature wear.

Can cleaning the intake manifold runners fix code P2015?

If the root cause is an obstruction in the intake runners, cleaning them may resolve the issue. However, in many cases, the runners are not serviceable and the entire manifold must be replaced if they are damaged.

What are the risks of buying a used car with code P2015?

Buying a used vehicle with an active code P2015 can be risky, as there may be hidden damage to the intake manifold or other expensive components. It’s best to have the car thoroughly diagnosed before purchasing.

How often should the intake manifold runner control system be inspected?

There is no specific maintenance schedule for the IMRC system. However, it’s a good idea to have it inspected if you experience rough idle, poor performance, or long crank times. Early diagnosis can prevent more costly repairs down the road.