NOx Sensor（For VW）

Your Professional NOx Sensor (For VW) Supplier!

Wenzhou Yili Automotive parts Technology Co., Ltd. is a modern company specializing in R&D and production of oxygen sensors, temperature control switches, ABS wheel speed sensors, camshaft position sensors, crankshaft position sensors, water temperature sensors, oil pans, and intake manifolds. And has a complete and scientific quality management system, advanced testing platform and strong R&D team.

Why Choose Us

Professional team

We have a professional R&D team composed of experienced engineers and scientific researchers. The team can continuously invest resources to carry out the research and development of new technologies and new materials, and continuously launch products with better performance and better market demand.

Advanced equipment

We are equipped with a full set of automated production equipment, a complete sensor R&D platform and dedicated test bench testing equipment to provide solid technical support for product development and quality assurance.

Quality control

From raw material procurement to product production, assembly, testing, packaging and other links, we have established detailed quality standards and inspection processes. Through strict quality control, we ensure that every product shipped meets high quality requirements.

OEM&ODM service

We have a complete and scientific quality management system, advanced testing platform and strong R&D capabilities, and can provide customers with high-quality OEM and ODM service solutions.

NOx Sensor (For VW) Specification

Applicable Model	5WK9 6688A 03L9 07807 AD
Connector Type	Flat 5-pin black
Probe type	Small Head
Insulating sleeve	Black
Applicable voltage	12V
Mounting hole type	Square ears
Back cover type	Metal

NOx Sensor (For VW) Key Features

OEM-Quality Precision

Designed to meet or exceed VW specifications for accurate NOx emissions monitoring.

Premium Craftsmanship

Manufactured with high-grade materials to ensure long-lasting performance.

Fuel Efficiency & Engine Optimization

Precisely regulates NOx emissions, helping to improve fuel economy and reduce engine wear.

Easy Plug-and-Play Installation

Direct-fit design allows for a quick and hassle-free replacement.

The Basic Principle Of NOx Sensor (For VW)

The primary function of a NOx sensor is to measure the concentration of nitrogen oxides (NOx) in the vehicle's exhaust gases. Here's how a NOx sensor works:

01/

Detection of NOx Emissions: When the engine of a vehicle burns fuel, it produces nitrogen oxides as a byproduct, which includes both nitrogen dioxide (NO2) and nitric oxide (NO). NOx emissions are a major contributor to air pollution and can have adverse environmental and health effects.

02/

Sensor Location: NOx sensors are typically installed in the exhaust system, either upstream or downstream of the catalytic converter or SCR system.

03/

Sensing Technology: NOx sensors use various sensing technologies to detect the concentration of NOx in the exhaust gases.

04/

Signal Output: The NOx sensor generates an electrical signal that varies depending on the concentration of NOx in the exhaust gases. The sensor's output is typically in the form of a voltage signal, which is sent to the vehicle's engine control unit (ECU) or emissions control system.

05/

Feedback to the ECU: The ECU uses the data from the NOx sensor to optimize the engine's air-fuel mixture and control the operation of emissions control systems, such as SCR or LNT. By monitoring NOx levels, the ECU can make real-time adjustments to reduce NOx emissions and meet emissions standards.

06/

Closed-Loop Control: NOx sensors are often part of a closed-loop control system, which means the ECU continuously adjusts engine parameters based on the sensor's feedback to maintain optimal emissions performance. This can include controlling exhaust gas recirculation (EGR) rates, injection of adblue (diesel exhaust fluid), or adjustments to ignition timing and fuel injection.

NOx Sensor For VW 5WK9 6637B / 059907807 C

Operating Conditions of NOx Sensor (For VW)

When the ignition switch is turned on, the NOx sensor will be heated to 100 ℃. Then wait for the ECM to send a "dew point" temperature signal (dew point temperature means that there will be no moisture in the exhaust system that can damage the NOx sensor after this temperature).

At present, the dew point temperature is set to 120 ℃, and the temperature value is the value measured by referring to the outlet temperature sensor of EGP; When the sensor receives the dew point temperature signal from ECM, the sensor will heat itself to a certain temperature (up to 800 ℃).

Note: At this time, if the sensor head contacts water, the sensor will be damaged; After heating to the working temperature, the sensor starts normal measurement; The sensor sends the NOx value to the CAN bus, and the engine ECM monitors the NOx emission through this information.

Our Services

Pre-Sale Service

Provide detailed introductions of our products, assist customers in selecting appropriate options, and recommend products that best meet their needs.

In-Sale Service

Deliver high-quality products with efficient shipping processes while keeping customers informed throughout all stages of production.

After-Sale Service

Ensure prompt responses to any inquiries or issues that may arise.

Packaging and Shipping

Packaging	Neutral packaging, if you want to design packaging, please feel free to contact us.
Transportation methods	Road transport, rail transport, sea transport, air transport

Advantage

Our Certificate

page-380-293

page-380-600

FAQ

Q: How do you know if your NOx sensors are faulty?

A: The NOx sensors tells the ECU how much DEF should be injected into the exhaust before it enters the SCR. If the sensors are faulty, you'll likely see increased DEF consumption and fuel spending, alongside erratic or unstable idling. At this point, your truck is likely to throw a fault code, and trigger a warning light on your dashboard.

Q: Can you drive with a bad NOx sensor?

A: It's important to repair or replace a faulty NOx sensor quickly to protect your engine and aftertreatment system. You can drive for a short time with a faulty one, with the engine running rich and over-using DEF, but the ECU will eventually send your truck into limp mode and engine derate.

Q: Why is the NOx sensor important?

A: NOx gases are harmful enough to cause respiratory problems and various health problems. NOx sensors directly contribute to improving air quality by reducing the release of these gases. They are an important tool in combating air pollution, especially in large cities and industrial areas.

We're professional nox sensor（for vw） manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy high-grade nox sensor（for vw） made in China here from our factory.

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