Peugeot's BlueHDi engines (1.5, 1.6 and 2.0) are among the most fault-prone in the UK when it comes to AdBlue and NOx. Sensor failure, injector crystallisation and software strategy issues drive most of the workshop visits we see.
Most affected Peugeot models
Peugeot 308 1.5 & 2.0 BlueHDi
Peugeot 3008 1.5, 1.6 & 2.0 BlueHDi
Peugeot 5008 1.5 & 2.0 BlueHDi
Peugeot Partner 1.5 & 1.6 BlueHDi (mk3 / K9)
Peugeot Expert 1.6 & 2.0 BlueHDi
Common symptoms
'AdBlue additive fault — 1,100 miles' or countdown to no-start.
'Risk of engine damage' or 'depollution system faulty' messages.
Vehicle drops into limp mode with reduced power.
Engine will not restart after ignition-off.
The permanent Peugeot AdBlue fix
We remove the SCR strategy from the ECU and turn off both NOx sensor monitoring loops. No hardware bodges — the ECU simply stops looking for the fault.
The result: no warnings, no countdown, no limp mode, MOT-friendly and covered by our lifetime warranty.
Frequently asked questions
How much is a Peugeot NOx sensor replacement?＋
Genuine sensors typically run £250–£500 each, and many Peugeots use two. Even after replacement, faults often return within 12–18 months — one reason owners choose permanent removal instead.
Which Peugeot is worst for AdBlue faults?＋
The 3008 and 5008 1.5 BlueHDi are the highest-volume issues we see, followed by the Partner van.
Can you fix a Peugeot that won't restart?＋
Yes. We can wake vehicles that have entered the no-start state and remove the AdBlue strategy in a single mobile visit.