P1017: How to Diagnose & Fix — Valvetronic Eccentric Shaft Sensor Plausibility (BMW/MINI)
4 vehicles · 1 makes · $150-$4,000 repair
How to diagnose and fix P1017: 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.
BMW M3 · 2008–2013
The S65's VANOS (variable valve timing) solenoids control oil flow to adjust camshaft timing. Over time, internal wear and oil contamination cause the solenoids to malfunction, leading to poor engine performance, rough idle, and decreased fuel economy.
Common Symptoms
- Rough or unstable idle
- Sluggish acceleration especially at low RPM
- Loss of power throughout RPM range
- Check engine light illuminated
- Loud ticking or rattling sounds from engine
- Jerky throttle response
How to Fix
Replace VANOS solenoids (typically done as a set). Use high-quality BMW-approved oil to prevent contamination. Maintain regular oil change intervals (5,000-7,500 miles).
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine BMW S65 VANOS intake/exhaust solenoid kit 11367843118KTOEM11367843118 / 11367843117Cross-ref11367843118KT
Confirmed one-bank S65 intake/exhaust VANOS solenoid pair.
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Sources for this issue (1)
BMW M240i · 2017–2024
The B58 engine's VANOS solenoid o-rings degrade due to wear and high temperatures, causing oil leaks and variable valve timing faults. When the o-rings fail, oil pressure to the VANOS system is compromised, leading to rough idle, reduced power, and check engine lights. This is a continuation of a problem that has affected multiple generations of BMW inline-6 engines.
Common Symptoms
- Rough idle, especially when cold
- Reduced power and acceleration hesitation
- Check engine light with VANOS codes
- Oil leak around VANOS solenoid area on top of engine
- Engine stalling at low RPM
How to Fix
Replace the VANOS solenoid o-rings with updated silicone o-rings. Clean the solenoid screens of any debris. If solenoids are contaminated, replace the entire solenoid unit. Use BMW-approved 0W-30 oil and maintain proper oil change intervals to reduce o-ring degradation.
Sources for this issue (1)
BMW 7 Series · 2009–2015
The N63 engine uses BMW's Valvetronic system (variable valve lift) which commonly fails. The Valvetronic eccentric shaft motor wears out or burns out, causing rough running and limp mode. The system also suffers from carbon buildup on the Valvetronic mechanism. Failure typically occurs between 60,000-100,000 miles. Symptoms include rough idle, reduced power, and check engine lights. This is a separate issue from the turbo problems but equally common on early N63 engines. The N63 has two Valvetronic motors (one per cylinder bank).
Common Symptoms
- Rough idle or engine vibration
- Check engine light with Valvetronic codes (P1163, P1164)
- Limp mode activation (reduced power)
- Poor throttle response
- Increased fuel consumption
- Rattling noise from valve cover area
How to Fix
Replace Valvetronic eccentric shaft motor(s). Often both motors need replacement since wear is similar. Clean carbon buildup from Valvetronic mechanism during repair. N63 Customer Care Package may cover this repair on eligible VINs. Labor is 6-10 hours. Some shops recommend replacing Valvetronic motors preventively at 80,000 miles to avoid being stranded. Extended warranty highly recommended for N63-powered 7 Series.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine BMW Valvetronic actuator/servo motor 11377605025Cross-ref11377605025
Confirmed N63TU Valvetronic actuator replacement. Confirm VIN, fault diagnosis, shaft condition and associated seals/hardware before ordering..
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Sources for this issue (1)
BMW 4 Series · 2014–2018
BMW M3 · 2001–2006
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P1017 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 P1017 mean?
P1017 stands for "Valvetronic Eccentric Shaft Sensor Plausibility (BMW/MINI)." P1017 is a manufacturer-specific code (meaning varies by automaker, but most commonly BMW/MINI) that generally indicates an implausible or out-of-range signal from the Valvetronic eccentric shaft position sensor, which the engine controller uses to monitor how far the intake valves are opening. When the reported shaft position does not agree with what the computer expects, it flags this plausibility fault. Because Valvetronic controls engine airflow, the engine often drops into reduced power until the fault is fixed.
What are the most common causes of P1017?
The most common causes of P1017 are: Engine oil leaking onto/into the eccentric shaft sensor (valve cover gasket), Faulty eccentric shaft position sensor, Wiring or connector damage at the sensor, Valvetronic motor or mechanical binding affecting position feedback, Oil contamination of the sensor connector, Control module fault (less common). The specific cause varies by vehicle.
How much does it cost to fix P1017?
Repair costs for P1017 range from $150 to $4,000, depending on the vehicle and root cause.
Which vehicles are affected by P1017?
Au7o has documented P1017 across 4 vehicle models from 1 manufacturers: BMW.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.