Refurbished NOx sensors are very commonly found in garages, services and part shops.While it is an ideal solution, you still run a risk of it happening in the future, meaning that there will be more money spent on repairs. Around 500-1200 EUR will get you a new NOx sensor to replace the faulty one on your vehicle. ![]() Thankfully, fixing a NOx sensor is not that difficult, but can be expensive depending on the solution: As NOx sensors are directly linked to the SCR system, there will also be emission and general SCR system faults, which only add onto the list of issues. If a NOx sensor fails, the vehicle can have multiple faults on the dashboard which will cap the power of your truck (Limp mode). In some cases (such as DAF trucks or in all Euro 6 trucks, such as Volvo, Mercedes, Scania, IVECO, Renault, MAN) there would be 2 NOx sensors (one additional sensor before the SCR system) which would determine the amount of AdBlue needed to inject to have near-perfect NOx conversion. It is typically placed before or after the catalyst in the SCR system to calculate if the emissions are at an appropriate level.Įuro 5 trucks usually have 1 NOx sensor. A NOx (nitrogen oxide) sensor is a device that is used to analyse the emissions of a vehicle and determine the amount of nitrogen oxides being produced.
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