Home › Fault-code guides

P2015 – Intake manifold runner position sensor/switch circuit range/performance (Bank 1)

What it means

Many engines have movable flaps in the intake manifold. Depending on engine speed and load, they direct the incoming air, either by adding swirl or by changing the length of the intake runners. An actuator moves the flaps, and a sensor reports their position back to the engine computer. P2015 means this position signal doesn't add up: it is outside the expected range, or it doesn't follow the position the computer is asking for.

Symptoms

• Check engine light on.
• A slight loss of power, especially in certain rev ranges.
• Rough idle or hesitation.
• Sometimes a rattling or clicking noise from the intake manifold.

Common causes (most likely first)

1. A worn, loose or broken flap linkage: rods, levers, the shaft connection. On many models, wear of the plastic parts is a known weak spot.
2. Carboned-up, sticking flaps. Common on diesels and direct-injection petrol engines.
3. A faulty actuator or position sensor.
4. A wiring fault: a broken or corroded contact, a damaged cable.
5. On vacuum actuators, a cracked vacuum hose or a faulty control solenoid.

How urgent is it? Can I drive?

Usually drivable in the short term. If you hear rattling or clicking, don't put it off. On some engines a flap or its fixing can break and the pieces can end up in the engine, causing serious damage. If you notice a big loss of power or limp mode, go easy on the engine.

What to check first

1. Read all codes and check the freeze frame: the engine speed and temperature when the code was set.
2. Compare requested and actual flap position in live data, if your scanner shows it. If the actual value doesn't follow the request, a mechanical or actuator fault is likely.
3. Look at the actuator and linkage. If you can reach them, watch whether they move with the engine running or the ignition on. Look for play, a broken lever or a loose connector.
4. Check the connector for corrosion and loose contacts.
5. Check model forums to see whether it is a known fault on your engine code.

When to see a mechanic

Go if the linkage is intact but the fault stays, or if you suspect a carboned-up manifold. Cleaning or replacing the manifold is a workshop job. After the repair, some models need a basic setting (adaptation).

FAQ

Is replacing the actuator enough?

Only if testing shows it is faulty. If the flaps are stuck inside the manifold, a new actuator won't be able to move them either.

What is a swirl flap?

A flap in the intake manifold that creates swirl in the incoming air at low rpm. This helps the mixture burn better.

Is P2015 dangerous for the engine?

The code itself isn't, but on some models a worn flap mechanism can break. That's why a rattling noise should be taken seriously.