P2006 on Mercedes-Benz
Intake Manifold Runner Control Stuck Closed (Bank 1)
P2006 on Mercedes-Benz vehicles indicates intake manifold runner control stuck closed (bank 1). Au7o has documented this code across 1 Mercedes-Benz model — most commonly on M-Class. 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 Mercedes-Benz range from $150 to $700, 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 Mercedes-Benz by Model
Mercedes-Benz M-Class(1 issue)
- OM642 Diesel Intake Swirl Flap and Linkage (Swirl Rod) Failure2006-2015
The OM642 3.0L V6 diesel in the ML320/350 CDI and BlueTEC uses intake manifold swirl flaps actuated by plastic linkage rods ('swirl rods') and an electric swirl motor. Constant under-hood heat cycling makes the plastic linkage brittle, while carbon and oil from the crankcase breather make the flaps sticky; the combination snaps the plastic rods. Oil weeping from the turbo inlet seal can also drip onto and kill the swirl motor. The result is rough idle, power loss, an illuminated MIL and possible failed emissions inspection - a relevant concern for EU diesel periodic inspection.
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View P2006 across all makes →Frequently Asked Questions
What does P2006 mean on Mercedes-Benz?▼
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 Mercedes-Benz specifically, this code is documented across 1 model.
What causes P2006 on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: 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 Mercedes-Benz?▼
Repair costs on Mercedes-Benz range from $150 to $700, depending on the specific model and root cause.
Which Mercedes-Benz models have P2006 documented?▼
Au7o has documented P2006 on 1 Mercedes-Benz model: M-Class.