P200A on Mercedes-Benz
Intake Manifold Runner Performance Bank 1
P200A on Mercedes-Benz vehicles indicates intake manifold runner performance bank 1. Au7o has documented this code across 1 Mercedes-Benz model — most commonly on M-Class. P200A indicates the engine control module (ECM) has detected that the intake manifold runner control (IMRC) system for Bank 1 is not performing within its expected range. The intake manifold runners (swirl/tumble flaps) adjust airflow into the cylinders to optimize fuel atomization and combustion across different engine speeds and loads, and this code sets when the actual runner position or resulting airflow does not match the commanded value. Typical repair costs on Mercedes-Benz range from $150 to $700, depending on the specific model and root cause.
Common Causes of P200A
- •Stuck, broken, or carbon-clogged intake manifold runner flaps or shafts
- •Faulty intake manifold runner control (IMRC) actuator or motor
- •Failed or out-of-range intake manifold runner position sensor
- •Vacuum leaks or failed vacuum-actuated control diaphragm (on vacuum-operated systems)
- •Damaged or disconnected runner control linkage
- •Wiring/connector faults to the IMRC actuator or position sensor, or a faulty ECM
P200A 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 P200A across all makes →Frequently Asked Questions
What does P200A mean on Mercedes-Benz?▼
P200A stands for "Intake Manifold Runner Performance Bank 1." P200A indicates the engine control module (ECM) has detected that the intake manifold runner control (IMRC) system for Bank 1 is not performing within its expected range. The intake manifold runners (swirl/tumble flaps) adjust airflow into the cylinders to optimize fuel atomization and combustion across different engine speeds and loads, and this code sets when the actual runner position or resulting airflow does not match the commanded value. On Mercedes-Benz specifically, this code is documented across 1 model.
What causes P200A on Mercedes-Benz vehicles?▼
Common causes on Mercedes-Benz: Stuck, broken, or carbon-clogged intake manifold runner flaps or shafts, Faulty intake manifold runner control (IMRC) actuator or motor, Failed or out-of-range intake manifold runner position sensor, Vacuum leaks or failed vacuum-actuated control diaphragm (on vacuum-operated systems), Damaged or disconnected runner control linkage. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P200A 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 P200A documented?▼
Au7o has documented P200A on 1 Mercedes-Benz model: M-Class.