PeugeotFAQ client

Yes, AdBlue can be added to your Peugeot before the sensor comes on. Typically, the AdBlue warning lights only turn on when the level is too low. But there's no harm in topping up the AdBlue tank before the warning light comes on. Regularly topping up can ensure the efficient operation of the Selective Catalytic Reduction (SCR) system in your Peugeot, which uses AdBlue to reduce harmful NOx emissions. Please consult your Peugeot owner's manual for specific recommendations on AdBlue top-up procedures.