CITROEN C4 Picasso 1.6 BLUE HDi - Fault Code P2204 Nox Sensor. Faulty measurement of the Nox Content

Citroen C4 Picasso 1.6 BLUE HDi - Fault Code P2204 Nox Sensor. Faulty measurement of the Nox Content. Fault finding and repair

[@mechanicmatt871]

Adblue faults can be a mystery, that's why your videos are really helpful l. Sooner or later, I'll come across a similar fault myself and I refer back to your videos. Cheers mate

[@sandyande]

Cheers Matt I hope your getting on fine with your relocation to the south all the best Sandy

[@chrisellarby-bezak164]

Hello, great video, what did you use to tell it has a new sensor? Want to do this myself, can i get a scantool to program the sensor, if so what would you recommend? Cheers

[@kevinpalmer7452]

Misleading scan data can be frustrating 😩great video I learned a few things 🙏

[@sandyande]

Cheers Kevin, Sandy

[@Tubecraft1]

Thanks so much for taking the time to put that up. I use Texa and same thing no faults in engine ECU or bsi or instrument cluster but urea light flashing. When I try to re initialise nox sensor or urea injector it says function not supported and I’m thinking it’s the nox sensor ECU preventing communication. Again downstream is stuck at 200ppm

[@evansmarts775]

Nice one, I bet Rodney even beats the dance floor in the club 😂😂😂

[@sandyande]

He sure does, he’s the Scottish equivalent of John Travolta😂

[@huntnfishnuts5880]

Very interesting, I don’t get to work on small diesels but I do work on the ford 6.0 and 6.7 v8 and the dodge Cummins but I do know if there’s anything wrong with the def injection or pumps they won’t run regen and fill with soot, would an oxygen sensor tap fit that nox bung? I think it’s 18mm by 1.5mm, I was thinking of getting the heat inductor do you think it’s worth the money? Well deserved fish supper.

[@sandyande]

Heat inductor is a fine tool for any mechanic! If our broke we would buy another tomorrow!

[@huntnfishnuts5880]

@@sandyande thanks lads, il look at getting one

[@callumreid1825]

Hi.
I'm wondering where exactly you are located as have a friend looking for some advice on his mk7 Transit if possible?
Thanks
Callum

[@icyclaw13]

Open the box with PCB. You will probably crack it but thats ok. Remove PCB from it, clean it with alcohol, clean conectors use dielectric paste and put it back. Use plastidip to seal it around cover and conectors, because water is leaking inside thru one conector. Thats 99% of all fault units. Save money and be smart not was tě money on new or new used units.

[@sandyande]

Great tip👍

[@milenkokovacevic4358]

P20E8 - Powertrain
MID:$98 TID:$b1
: NOX/SCR Catalyst
Monitor Bank 1
Max: 30 Min: 1
Test result value:
32,766
FAIL
-
MID:$ 98 TID:$b2
NOX/SCR Catalyst
Monitor Bank 1
Test incomplete or
dependant test
failed
MID:$98 TID:$b3
NOX/SCR Catalyst
Monitor Bank 1
Max: 75 Min: -50
Test result value:
11,2
PASS
Can you recognize is it NOX sensors fail 100% or it can be soething else.
I have Emissions/AdBlue error

[@orneliahamba7834]

Hello, I have a problem whit the emissions fault, for Citroen C4 and it starts to show a countdown. pleased help me

[@cpuen]

Do you still have the problem?

[@tam1381]

Salt'n sauce (brown)

[@sandyande]

Salt & Vinegar ( Glessgae Version) 😂

[@RobertMustoe]

Take. It out and clean it😮

[@jamesmason8944]

Yip, phone the parts department....10 in stock......Price ....£315. Kinda tells you something.
Then ...£115 .. to clear the fault code after changing the sensor yourself, and they weren't even wearing masks.