Mercedes W211 M272 NOX Sensor Control Harness Wiring Right O/S A2195404906

The right-side NOX sensor control harness for Mercedes W211 with M272 engine is an original electrical component designed for precise connection of the nitrogen oxides sensor to the engine control system. Thanks to its factory geometry and fit for the right side of the vehicle, it ensures stable signal transmission and safe operation of the exhaust gas system. This solution is particularly beneficial for installation repairs where compliance with factory wiring and reliable installation are important.

Specifications and technical data

• SKU: A2195404906
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2195404906
• Substitutable numbers: A2195404906, A 219 540 49 06
• Location on the vehicle: Right
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Vehicle System

This control harness is a component from the Cables, Harnesses, and Connectors group, responsible for connecting the NOX sensor to the control electronics in Mercedes E-Class W211 models with the M272 engine. Its placement on the right side of the vehicle allows for proper routing of the cable according to the factory path, which reduces the risk of chafing, overheating, and signal interference.

In practice, this means the harness supports the correct operation of the exhaust gas control system, facilitating stable engine operating parameters and proper communication with the control unit.

Construction and Mounting Fit

The offered harness is designed as a dedicated component for a specific vehicle configuration, with appropriately selected cable lengths and factory connectors for the NOX sensor and the vehicle's electrical system. This solution minimizes the need for modifications, soldering, or adapters, resulting in a more reliable installation and reduced susceptibility to future failures.

By maintaining the original cable routing geometry, the harness allows for correct placement in the engine bay, with required clearances from hot and moving components. This is important for the durability of the insulation and the stability of electrical parameters over a longer service life.

Benefits of Using an Original Harness

• Factory connectors matched to the NOX sensor and vehicle's electrical system.
• Designed for the right side of the vehicle, consistent with original cable routing.
• Reduced risk of installation errors and sensor communication problems.
• Better compatibility with the exhaust gas system compared to universal solutions.

Choosing such a harness is particularly beneficial when diagnosing errors related to the NOX sensor, especially when there is suspicion of damaged wires, connectors, or insulation. Using a component structurally identical to the original facilitates the restoration of the system's proper function without additional installation modifications.

Application in Service and Repairs

The right-side NOX sensor control harness is suitable for both replacing damaged wiring and for comprehensive service work on the exhaust system and engine control. It allows for maintaining the integrity of the electrical installation, which is important for subsequent computer diagnostics and analysis of sensor operating parameters.

The component comes from the Mercedes offering, which means adherence to the quality standards characteristic of this brand and high compliance with factory service documentation.

How to Choose the Right Harness for Your Car?

To ensure that the selected NOX sensor control harness is appropriately matched to your specific vehicle configuration, it is advisable to rely on the OEM number and vehicle data from the manufacturer's system. A detailed guide describing how to select parts by VIN and OEM number can be helpful – you can find it in the article Guide: How to Select the Right Car Part by VIN and OEM Number, which describes the compatibility verification process step by step.

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other components from the same group, such as additional harnesses, signal cables, or service connectors, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.