Catalytic Converter Delete (Cat Off)
ECU software that prevents the warning light and power loss on cars with a removed or replaced catalytic converter.
NOx Sensor Delete
Software for the warning light, power restriction and AdBlue warnings caused by faulty NOx sensors.
- Diesel
- ~1–2 hours
- Track / Motorsport
Legal notice · Track / motorsport only
Software for emission systems (catalytic converter, DPF/FAP, OPF, EGR, AdBlue/SCR, etc.) is intended solely for track / motorsport and closed-course use. Driving vehicles with these systems disabled on public roads, and presenting them for TÜVTÜRK inspection, may be against regulations. On request, the original software can be restored.
About the service
What is it and how does it work?
NOx sensors measure the amount of nitrogen oxides in the exhaust gas to check whether the SCR (AdBlue) system is working properly. Operating at high temperatures, these sensors can fail over time; when they do, the warning light comes on, an AdBlue/emissions warning appears, and on some vehicles a power restriction or no-start countdown begins.
NOx sensor delete software disables the sensors’ monitoring functions and related fault codes in the ECU. On most vehicles the NOx sensors work as an integral part of the SCR system, so this work is usually considered together with an AdBlue/SCR delete. It is mainly done on diesel vehicles.
A NOx sensor delete is an intervention in the emission control system and is only for track / motorsport and closed-course use. For road-going cars, we recommend replacing the faulty sensor. The original software is kept and can be restored on request.
Benefits
What do you gain?
- Eliminates NOx-sensor-related fault codes and warnings
- Removes power restrictions caused by a sensor fault
- A complete solution compatible with AdBlue/SCR delete
- Original software is kept
Process
How is it done?
-
01
Step 01
Fault memory is read; the faulty NOx sensor is identified.
-
02
Step 02
The original software is backed up.
-
03
Step 03
NOx monitoring functions and related fault codes are disabled in the software.
-
04
Step 04
A road test confirms that the warnings have been cleared.
FAQ
NOx Sensor Delete — FAQ
The most frequently asked questions about this service, with short answers.
Have another question?Message us with your car’s make, model and engine.
Can a NOx sensor delete be done on its own?
On some vehicles, yes; however, on most vehicles the SCR system cannot dose correctly without NOx sensor data, so the job is planned together with an AdBlue/SCR delete. After diagnostics, we’ll tell you the best approach.
How can I tell if a NOx sensor has failed?
The most common signs are the warning light, an AdBlue/emissions warning and NOx sensor codes in the fault memory. We confirm it by reading the sensor’s live data with a diagnostic tool.
Compatibility
Which vehicles is it available for?
Availability depends on the car’s ECU type, engine and hardware. In our vehicle database, this option is listed for the number of engines below; you can check by selecting your own car.
- Engines
- 1.049
- Makes
- 31
- Share of database
- %13
- Mercedes-Benz116 engines
- Volkswagen107 engines
- BMW103 engines
- Audi79 engines
- Ford69 engines
- Peugeot65 engines
- Land Rover58 engines
- Citroën56 engines
Software for emission systems is intended solely for track / motorsport and closed-course use; driving such vehicles on public roads and presenting them for TÜVTÜRK inspection may be against regulations. On request, the original software can be restored.
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