P2008 on Mercedes-Benz
Intake Manifold Runner Control (IMRC) Circuit/Open (Bank 1)
P2008 on Mercedes-Benz vehicles indicates intake manifold runner control (imrc) circuit/open (bank 1). Au7o has documented this code across 1 Mercedes-Benz model — most commonly on G-Class. P2008 is a generic powertrain code indicating the engine control module (ECM) has detected an open or out-of-range electrical fault in the Intake Manifold Runner Control circuit for Bank 1. The IMRC system uses an actuator (solenoid/motor) to open and close runner control flaps in the intake manifold to optimize airflow, torque, and emissions across the RPM range; this code means the control circuit is not responding as commanded. Typical repair costs on Mercedes-Benz range from $200 to $900, depending on the specific model and root cause.
Common Causes of P2008
- •Failed or seized intake manifold runner control actuator/solenoid (motor)
- •Open, shorted, corroded, or chafed wiring in the IMRC control circuit
- •Loose or corroded electrical connector at the IMRC actuator
- •Stuck, broken, or carbon-fouled intake manifold runner flaps or linkage
- •Blown fuse or loss of power/ground to the IMRC actuator
- •Faulty ECM (rare)
P2008 on Mercedes-Benz by Model
Mercedes-Benz G-Class(1 issue)
- OM642 Diesel Intake Manifold Swirl Flap (Runner) Failure2005-2018
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.
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View P2008 across all makes →Frequently Asked Questions
What does P2008 mean on Mercedes-Benz?▼
P2008 stands for "Intake Manifold Runner Control (IMRC) Circuit/Open (Bank 1)." P2008 is a generic powertrain code indicating the engine control module (ECM) has detected an open or out-of-range electrical fault in the Intake Manifold Runner Control circuit for Bank 1. The IMRC system uses an actuator (solenoid/motor) to open and close runner control flaps in the intake manifold to optimize airflow, torque, and emissions across the RPM range; this code means the control circuit is not responding as commanded. On Mercedes-Benz specifically, this code is documented across 1 model.
What causes P2008 on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: Failed or seized intake manifold runner control actuator/solenoid (motor), Open, shorted, corroded, or chafed wiring in the IMRC control circuit, Loose or corroded electrical connector at the IMRC actuator, Stuck, broken, or carbon-fouled intake manifold runner flaps or linkage, Blown fuse or loss of power/ground to the IMRC actuator. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2008 on a Mercedes-Benz?▼
Repair costs on Mercedes-Benz range from $200 to $900, depending on the specific model and root cause.
Which Mercedes-Benz models have P2008 documented?▼
Au7o has documented P2008 on 1 Mercedes-Benz model: G-Class.