P2015: How to Diagnose & Fix — Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)
9 vehicles · 5 makes · $50-$2,500 repair
How to diagnose and fix P2015: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Volkswagen Jetta · 2005–2014
The 2.5L inline-5 engine in the MK5 Jetta develops intake manifold runner flap failures. The plastic flaps inside the manifold crack or stick, causing rough idle, power loss, and check engine lights.
Common Symptoms
- Rough idle
- Loss of power
- Check engine light
- Rattling from intake area
- Poor fuel economy
How to Fix
Sources for this issue (1)
Mercedes-Benz E-Class · 2007–2013
On the OM642 V6 diesel used in the E320 CDI/BlueTEC and E350 BlueTEC, the swirl-flap actuator motor sits low on the intake and is directly under the turbo intake seal, which is itself a known oil-leak point. Oil drips onto the motor and kills it, and the plastic linkage arm between the motor and the flap shaft snaps. At the same time EGR soot builds up in the intake runners until the flaps physically seize. The result is P2004-P2007 / P2015-type intake runner faults, limp mode capping the engine around 3000 rpm, rough idle and poor throttle response. Owners on BenzWorld and MBClub consistently report that replacing the actuator motor alone without cleaning the intake results in a repeat failure within 20,000-40,000 miles.
Common Symptoms
- Limp mode / power cut around 3000 rpm
- Check engine light with intake runner control codes
- Rough idle and poor throttle response
- Black smoke under acceleration
- Oil residue around the intake actuator motor
How to Fix
Remove the intake manifolds and physically clean the soot from the runners and flaps, replace the swirl flap actuator motor and the linkage rod (aftermarket metal rod kits are common and hold up better than the plastic original), and critically, fix the turbo intake seal / oil leak above it or the new motor will be soaked again. Some owners in high-mileage cars go to a swirl-flap delete, but that is not emissions-legal in the US. Address the EGR cooler and intake condition at the same time since the manifolds are already off.
Sources for this issue (3)
Mercedes-Benz G-Class · 2006–2018
On diesel G-Class models with the OM642 V6, the plastic intake-manifold swirl flap linkage becomes brittle and snaps, and the swirl-flap actuator motor can fail (often after being contaminated by oil weeping from the turbo inlet seal). The broken plastic rods can also be drawn into the engine in worst cases. This is a well-known weak point that triggers intake-runner control faults, limp mode, and emissions test failures. Particularly relevant to higher-mileage EU diesel examples.
Common Symptoms
- Engine warning light
- Limp mode / reduced power
- Rough or poor idle
- Hesitation on acceleration
- Failed emissions test
How to Fix
Replace the swirl-flap actuator and fit a metal/upgraded swirl-flap repair kit (e.g. updated connecting rod kit) to replace the brittle plastic linkage. Address any upstream turbo oil leak contaminating the motor. A resistor bypass only clears the code and is not a proper repair if the linkage is broken.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- X8R0175 OM642 dual swirl-flap connecting-rod repair kitOEMX8R X8R0175
External linkage-only branch when both OM642 manifold flap shafts and actuator test good Fitment/availability: The inspected manufacturer listing identifies X8R0175 as two aluminum rods with six retaining clips and anti-friction adapters…
- Genuine Mercedes-Benz OM642 swirl-flap actuator A6421500594OEMMercedes-Benz A6421500594
Later G 350 actuator-motor branch after commanded tests prove motor/circuit failure and VIN/stamped number match Fitment/availability: The inspected official German genuine-parts page identifies A6421500594 as an in-stock actuator at €26…
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Sources for this issue (3)
SEAT Leon · 2009–2020
Volkswagen Beetle · 2012–2019
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P2015 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2015 mean?
P2015 stands for "Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)." This code reports a range or performance problem with the intake manifold runner position sensor or switch on engine bank 1. Many modern engines use intake manifold runner control flaps that open and close to optimize airflow for low-speed torque versus high-speed power, and a position sensor reports the flaps' actual position back to the engine computer. The code sets when that reported position doesn't match what the computer commands or expects, often because the flap linkage is broken or the sensor reads incorrectly. It commonly causes rough running, reduced power, or hesitation, and on some engines the plastic linkage breaking is a well-known weak point.
What are the most common causes of P2015?
The most common causes of P2015 are: Broken or disconnected intake manifold runner flap linkage, Faulty intake manifold runner position sensor, Stuck or seized runner control flaps from carbon buildup, Failed runner control actuator or motor, Wiring or connector fault at the position sensor, Vacuum leak or failed vacuum actuator (on vacuum-controlled systems), Cracked or warped intake manifold housing. The specific cause varies by vehicle.
How much does it cost to fix P2015?
Repair costs for P2015 range from $50 to $2,500, depending on the vehicle and root cause.
Which vehicles are affected by P2015?
Au7o has documented P2015 across 9 vehicle models from 5 manufacturers: Audi, Mercedes-Benz, SEAT, Skoda, Volkswagen.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.