Small sensor, big effect – NOx sensors from VEMO
A defective NOx sensor can do more than just light up warning lights - it can cause considerable damage to the engine and the environment.
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NOx sensors are crucial for emission monitoring and compliance with legal limits. VEMO offers high-precision and durable sensors that are developed according to OE specifications. Find out here why choosing the right sensor is crucial.
What is a NOx sensor and how does it work?
A NOx sensor is an electronic device that measures the concentration of nitrogen oxides (NOx) in the exhaust gas. These gases are mainly produced at high combustion temperatures and are harmful to the environment and health. NOx sensors are widely used in modern vehicles, where they are used to reliably monitor and precisely control emissions
Is a NOx sensor the same as a lambda sensor?
No, a NOx sensor differs significantly from a lambda sensor. While a NOx sensor is specifically responsible for measuring nitrogen oxides, a lambda sensor monitors the oxygen content in the exhaust gas. Although both sensors work with similar technologies, they fulfil different tasks:
- Lambda sensor: Optimises the air-fuel ratio for efficient combustion.
- NOx sensor: Controls exhaust gas aftertreatment and helps to comply with emission limits.
Thanks to these clearly separated functions, both sensors complement each other in the exhaust system and together contribute to reducing pollutants. The NOx sensor is therefore an indispensable component of modern vehicles in order to meet the requirements of the emissions standards and at the same time optimise engine performance.
How do I recognise a defective NOx sensor?
A defective NOx sensor rarely goes unnoticed – the vehicle draws attention to it in various ways.
- Warning lights illuminate in the cockpit.
- Increased fuel consumption.
- Reduced engine power.
Warum man mit der Reparatur des NOx-Sensors nicht warten sollte
Why you shouldn’t wait to repair the NOx sensor
- Higher pollutant emissions.
- Damage to important components.
- Possible fines if limit values are exceeded.Ein hochwertiger VEMO NOx-Sensor verhindert solche Probleme und spart dir langfristig Kosten.
Causes of malfunctions of NOx sensors
NOx sensors work under extreme conditions – day after day, kilometre after kilometre. No wonder they sometimes reach their limits. But why do they fail in the first place? The most common causes of failure:
❌ Thermal load
The high temperatures in the exhaust gas flow can push even robust sensors to their limits. The materials age more quickly and at some point the sensitive electronics fail.
❌ Residues in the exhaust gas flow
Soot, oil or other residues are deposited on the sensor over time and impair the measuring accuracy. The worse the combustion, the higher the load on the sensor.
❌ Moisture and mechanical damage
Water or condensation can damage the sensitive electronics. In addition, vibrations and shocks can lead to cracks or breakages if installed incorrectly or under extreme conditions.
Your choice makes the difference
VEMO NOx sensors have been specially developed to meet these challenges.
✅ Thermal load? No problem.
Thanks to innovative technology, mineral-insulated cables and robust sensor housings, our sensors operate with uncompromising reliability even at extreme temperatures.
✅ Residues in the exhaust gas flow? Not with us.
Our sensors are equipped with a waterproof cover that protects the sensor element from dirt and residues.
✅ Mechanical damage? We are prepared.
VEMO NOx sensors are designed to such a high standard that they guarantee maximum service life even under the most adverse conditions. Teflon-insulated wires ensure additional safety and durability.
✅ Reliability that pays off
Outstanding quality is VEMO’s top priority – at every stage. Our NOx sensors comply with OE specifications and fulfil the demanding IATF 16949 quality standard of the automotive industry. VEMO sensors are tested with state-of-the-art test equipment and tested in the vehicle before delivery. This is the only way to ensure that the sensor functions perfectly in everyday workshop use.
“With VEMO, you are choosing more than just a spare part. With a VEMO NOx sensor, you are opting for reliability, durability and efficiency. These sensors not only help you with repairs, but also make your everyday workshop life more relaxed and ensure more satisfied and loyal customers in the long term. Let your workshop benefit from the quality and performance of our sensors – simply, quickly and sustainably.” Jens Reimers, Product Manager
Replacing a NOx sensor: it’s that easy with VEMO
Replacing a NOx sensor doesn’t have to be complicated. VEMO makes installation simple and safe:
- Accurate fit thanks to vehicle-specific tuning.
- Clean connections for a secure fit.
This is how it works: In our video, we show you step by step how easy it is to replace a NOx sensor with VEMO – from how it works to how it is fitted. Watch now:
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How much does it cost to repair a NOx sensor?
The cost of replacing a NOx sensor depends on various factors, including the vehicle model, the labour time and the choice of spare parts. A VEMO NOx sensor offers the optimum price-performance ratio. Its reliability and simple installation not only save time, but also repair costs. For an individual assessment, it is advisable to enquire directly with the specialist workshop.
With VEMO NOx sensors, you are opting for quality, reliability and a product you can rely on every day. Discover the extensive range of high-quality VEMO NOx sensors now.
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