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P2015 — Fault Code

By Mr Auto Fixer — Professional Mechanic, 20+ Years Experience

Check repair guide for details.

High — Do Not Ignore
Last checked: May 2026

What Is P2015?

P2015 is stored when the ECU detects that the intake manifold runner position sensor is giving a signal outside the expected range. This sensor monitors the position of the runner control flaps and feeds back to the ECU to confirm the flaps are moving as commanded.

P2015 is very common on VW/Audi group vehicles fitted with the 2.0 TDI engine, but also appears on BMW, Ford, and Vauxhall engines. The fault is often caused by the position sensor itself failing, but seized flaps that prevent movement (causing the sensor to read a stuck position) are equally common.

Common Symptoms

  • Engine management light on
  • Rough idle or hesitation
  • Reduced performance at low revs
  • Possible limp mode
  • Poor fuel economy
  • Black smoke on some diesels

Common Causes

Failed IMRC position sensor — common on high-mileage vehicles
Carbon-seized intake manifold runner flaps preventing movement
Damaged or corroded sensor wiring and connector
Broken plastic linkage or actuator mechanism
Short or open circuit in the position sensor signal wire
Failed IMRC actuator unable to move flaps to the commanded position

How to Diagnose P2015

1

Check Live Sensor Data

Connect an OBD scanner and monitor the IMRC position sensor value in live data. Rev the engine from idle to high revs — the value should change smoothly. A fixed or erratic reading confirms a sensor or mechanical fault.

2

Inspect the Position Sensor

Locate the IMRC position sensor on the intake manifold. Check for physical damage, cracks in the sensor body, and a secure connector. On VW 2.0 TDI, the position sensor is integrated into the IMRC actuator assembly.

3

Check Sensor Wiring

Test the signal wire voltage with the ignition on. The reference voltage should be 5V. Test continuity of each wire back to the ECU. Corroded or damaged wiring is common on engines with high heat exposure.

4

Test Flap Movement

Manually operate the IMRC linkage by hand. It should move smoothly through its full range. If stiff or seized, carbon deposits are restricting movement — the sensor reports the correct position but the flaps cannot reach it.

5

Clean or Replace Manifold

On carbon-seized units, the manifold needs professional cleaning or replacement. Simply replacing the sensor on a seized manifold will not resolve the fault.

6

Replace Position Sensor/Actuator

If the flaps move freely but live data shows an incorrect sensor reading, replace the position sensor or the actuator assembly (on vehicles where they are integrated).

VW 2.0 TDI NoteOn the VW/Audi 2.0 TDI engine, P2015 is one of the most frequently seen codes. The plastic IMRC actuator deteriorates over time and the position sensor often fails as part of this. A revised, more durable actuator is available as an upgrade — worth fitting at the same time as any repair.

Verdict

Check live sensor data first to distinguish a position sensor failure from a mechanically seized flap. On VW 2.0 TDI, the revised actuator assembly is the recommended fix.

Mr Auto Fixer
Written by
Mr Auto Fixer
Qualified Mechanic20+ Years ExperienceUK Based

Professional UK mechanic with over 20 years of hands-on experience. All guides are based on real workshop repairs — not theory.

About Mr Auto Fixer
Common Questions

Frequently Asked Questions

Yes — it is one of the most common fault codes on the 2.0 TDI engine. The original plastic IMRC actuator is prone to failure, and Volkswagen has produced revised parts to address this.
Yes for short distances, but limp mode may activate. Performance and fuel economy will be affected. Address it before long journeys.
The actuator assembly typically costs £40–£150 in parts. Labour is 1–2 hours on most engines. Manifold replacement or cleaning adds significant cost if the flaps are seized.
No. The code will return unless the underlying mechanical or electrical fault is addressed.
Related but different. P2006 indicates the flap is stuck closed. P2015 indicates the position sensor signal is out of range. Both can be caused by seized flaps, but P2015 also triggers when the sensor itself has failed electronically.
No — a dirty air filter affects airflow volume but does not directly cause P2015. The code is specifically related to the position sensor circuit and the flap mechanism.