P2017 on Subaru: How to Diagnose & Fix
Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 1)
1 Subaru model · 1 documented issue · $350-$1,200 repair
P2017 on Subaru by model: symptoms, diagnosis and fix
Turbo WRX intake manifolds carry tumble generator valves — butterfly plates in each runner driven by a small electric actuator with a position sensor. The original valve shaft material corrodes from EGR/condensation and binds, or the actuator motor/sensor fails, and the ECU logs TGV stuck-open/stuck-closed codes (P2004-P2007, sometimes P2016/P2017 position sensor codes). The car goes into a reduced-power mode. Subaru acknowledged the shaft corrosion in TSB 02-182-19 and revised the shaft material. It affects the FA20DIT WRX (2015-2019).
Common Symptoms
- Check engine light with P2004-P2007
- Significant loss of power / limp mode
- Rough idle
- Intermittent code that returns after clearing
How to Fix
Confirm by disconnecting the actuator and rotating the valve by hand — a gritty or stuck shaft means the TGV assembly is seized. Replace the affected TGV assembly with the revised-shaft part (Subaru does not sell the motor or sensor separately). Some owners delete TGVs with aftermarket housings, which requires a tune. Out of warranty there is no free remedy; the TSB is a diagnostic aid, not a campaign.
Sources for this issue (4)
P2017 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 P2017 mean on a Subaru?
P2017 stands for "Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 1)." A generic code: the PCM sees a high-voltage (near reference) signal from the bank 1 IMRC position sensor circuit, typically an open circuit or short to power. On Subaru it is documented across 1 model: WRX.
What are the most common causes of P2017?
The most common causes of P2017 are: Open circuit in the sensor signal/ground wire, Short to power/reference voltage, Failed IMRC position sensor, Corroded/loose connector. The specific cause varies by vehicle.
How much does it cost to fix P2017 on a Subaru?
Published repair estimates on Subaru range from $350 to $1,200 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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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.