Nox sensor

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Nox sensor

Davehardy1964

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Nov 13, 2025
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I'm new on here so asking,
I've got an engine light come on and its coming up with faulty nox code,
Do I need the same number for a replacement nox sensor and does it need to be reprogramed
 
Yes if replacing a part it has to be the correct part.
Programming....I do not know for sure but maybe the ecu needs telling it has a new nox sensor.
A code for sensor doesnt 100%mean sensor is faulty, could be wiring for sensor or other issues.

What vehicle?
What year?
What engine?
What code?
 
I dont recognise that code pp225c
What code reader/scan tool are you using?
 
2023.....should still be under warranty.
If so do not touch it yourself, this is very important.
Is it a moho?
 
Clear the code , if it comes back then you know it requires further action.
 
It may have a security gateway stopping you clearing any codes. You may have to go to fiat. You may be able to get "goodwill" from fiat uk if only just out of warranty and you have had servicing done by fiat
 
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