Peugeot 3008 1.5 hdi 2019

[Pepe autotechnics]

Hi I have a Peugeot 3008 1.5 hdi 2019 with adblue fault last week I replaced the urea injector as it was open circuit and leaking adblue, that fault I was then able to clear and now this week I have a different fault with adblue system fault code P20EE 92 and depollution of the deNox system effectiveness fault the system pressuring ok 5 bar and injector working ok and system test said ok on diagbox, but with engine running in parameters shows flow of exhaust gas estimated by the Nox sensor is -87241523200 which seems very high in minus figures, do you think the fault is the DeNox sensor??

[mickthemaverick]

That sounds like a sensor error. Did you use the repair section of Diagbox to confirm new parts fitted?

[Pepe autotechnics]

Yes used repair section and new part but I replaced the urea injector as it was leaking and now I think the fault is the DeNox sensor as the urea injector works!! And in the parameter readings I sent shows very weird DeNox sensor readings!!

[Pepe autotechnics]

Do you think this is a DeNox sensor fault, as per parameter readings?

[mickthemaverick]

Yes, that is what I meant in my 'sounds like a sensor' comment yesterday.

[Pepe autotechnics]

Hi the repair for this fault was software update as per technical service bulletin (TSB) from Stellantis, all ok now after inj ecu update.