Mercedes W204 Petrol OM156 OM159 Camshaft position Sensor Inlet Left A0009050243

The Mercedes W204 OM156 OM159 Camshaft Position Sensor Intake Left is a precise component of the gasoline engine control system, responsible for accurately determining the position of the intake camshaft. This allows the engine control unit to stably and repeatably control camshaft timing, which translates to improved engine smoothness, throttle response, and proper fuel mixture combustion. This solution is dedicated to Mercedes vehicles, designed to maintain factory engine operating parameters.

Specifications and technical data

• SKU: A0009050243
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009050243
• Substitutable numbers: A0009050243, A 000 905 02 43
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Camshafts

Function of the Camshaft Position Sensor in a Gasoline Engine

The intake camshaft position sensor is responsible for providing the control unit with information about the current position of the camshaft relative to the crankshaft. Based on this, the engine management system determines the fuel injection and ignition timing, as well as controls any camshaft timing adjustments. In gasoline engines like the OM156 and OM159, a correct signal from the sensor is crucial for:

• maintaining smooth idle operation,
• proper starting of both warm and cold engines,
• smooth acceleration without jerking or power loss,
• maintaining optimal fuel consumption and emissions.

Its placement on the left side in the intake area allows for precise monitoring of the specific camshaft's operation, which is particularly important in modern multi-valve engines.

Purpose and Fitment for Mercedes W204

The presented sensor is designed for use in Mercedes C-Class W204 models equipped with OM156 and OM159 gasoline engines. This means its geometry, connector type, and signal characteristics are adapted to the factory requirements of the engine control system in these units. This ensures:

• compatibility with original wiring and harnesses,
• proper cooperation with the factory engine control unit,
• stable operation across the full range of RPMs and loads.

Selecting a sensor dedicated to a specific engine family reduces the risk of diagnostic errors, camshaft synchronization problems, and improper operation of related systems, such as variable valve timing.

Benefits of Using an Original Sensor in the Camshafts Category

Components in the Camshafts group and their associated sensors operate in a demanding environment – near the cylinder head, under high temperatures, and variable load conditions. Using the correct intake camshaft position sensor ensures:

• reliable camshaft position readings across the entire speed range,
• reduced risk of camshaft synchronization errors,
• better cooperation with the variable valve timing system, if equipped,
• maintenance of factory gasoline engine operating parameters.

By choosing this sensor, you are investing in the cohesion of the entire camshaft system, which translates to longer lifespan for mechanical components and predictable engine behavior in daily use.

Installation and Operational Characteristics

The left intake camshaft position sensor is a component that, in most cases, can be installed in place of the factory sensor without requiring modifications to the wiring. Proper seating in its housing and correct connection of the electrical connector are crucial for ensuring a stable signal to the control unit. A correctly selected and installed sensor allows for:

• reducing the risk of sudden engine stalls while driving,
• limiting the occurrence of limp mode related to camshaft errors,
• maintaining predictable accelerator pedal response.

The used condition means the part comes from disassembly, which for original Mercedes parts often represents a reasonable compromise between cost and maintaining factory specifications and build quality.

Expanding the Camshaft System in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as camshafts, sprockets, or variable valve timing components, check the available parts in the Mercedes Camshafts category.

For drivers also interested in improving visibility and driving safety, practical tips on selecting lighting may be useful – you can find them in the article See More and Better – A Complete Guide to Selecting and Replacing Used LED and Xenon Headlights, which discusses the selection of original lighting components in premium vehicles.