P2006 on Subaru
Intake Manifold Runner Control Stuck Closed (Bank 1)
P2006 on Subaru vehicles indicates intake manifold runner control stuck closed (bank 1). Au7o has documented this code across 1 Subaru model — most commonly on WRX. This code means the intake manifold runner control on Bank 1 is stuck in the closed position. Many engines use small flaps inside the intake manifold that open and close to optimize airflow for low-speed torque versus high-speed power, and an actuator moves them while a position sensor confirms their movement. When the computer commands the runners open but they stay closed (or the feedback says they're stuck), it sets this code. You may notice rough idle, hesitation, reduced power at higher RPM, or lower fuel economy. Typical repair costs on Subaru range from $350 to $1,200, depending on the specific model and root cause.
Common Causes of P2006
- •Carbon buildup jamming the intake runner flaps
- •Failed intake manifold runner control actuator/motor
- •Stuck or broken runner flap linkage or flaps
- •Faulty runner position sensor
- •Disconnected or leaking vacuum line (vacuum-actuated systems)
- •Damaged or corroded actuator wiring/connector
- •Failed intake manifold (warped or broken internal components)
P2006 on Subaru by Model
Subaru WRX(1 issue)
- Tumble Generator Valve (TGV) Shaft Seizure or Actuator Failure Setting P2004-P2007 and Forcing Limp Mode2008-2021
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 both the EJ255 (2008-2014) and FA20DIT (2015-2021) WRX, with separate part numbers per engine.
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What does P2006 mean on Subaru?▼
P2006 stands for "Intake Manifold Runner Control Stuck Closed (Bank 1)." This code means the intake manifold runner control on Bank 1 is stuck in the closed position. Many engines use small flaps inside the intake manifold that open and close to optimize airflow for low-speed torque versus high-speed power, and an actuator moves them while a position sensor confirms their movement. When the computer commands the runners open but they stay closed (or the feedback says they're stuck), it sets this code. You may notice rough idle, hesitation, reduced power at higher RPM, or lower fuel economy. On Subaru specifically, this code is documented across 1 model.
What causes P2006 on Subaru vehicles?▼
Common causes on Subaru: Carbon buildup jamming the intake runner flaps, Failed intake manifold runner control actuator/motor, Stuck or broken runner flap linkage or flaps, Faulty runner position sensor, Disconnected or leaking vacuum line (vacuum-actuated systems). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2006 on a Subaru?▼
Repair costs on Subaru range from $350 to $1,200, depending on the specific model and root cause.
Which Subaru models have P2006 documented?▼
Au7o has documented P2006 on 1 Subaru model: WRX.