2017 Volkswagen Amarok 3,0 TDI - Intermittent fault code P20EE

[@TimmyTheTool]

Nice and concise diagnosis, thanks Martin

[@joseramonherreramendoza9260]

Very interesting case indeed 👋😎👋😎 thank you martin. KEEP IT UP

[@stevejakobsen2765]

Awesome info guys!

[@VCPlou]

One year now i have P20EE on my Peugeot 208 bluehdi 2017. Nobody knows what's going on. After service I took the car on highway and check engine key light and adblue came on. I changed adblue injector but the problem still exist. I bought an obd to reset the lights by my own. Any suggestion?

[@ElektroPartnerApS]

Hello @VCPLOU. TO diagnose this type of error requires a technician with the right education, tools and information. This error can have many different reasons and different causes to the error. I advice you to send the car to a qualified technician with access to all the right information regarding this.

[@rukass1]

Thanks Martin, I have a same problem in an Iveco daily, code p20EE and the value in sensor 2 is greater than sensor 1! this van has a history of problems with the dpf and scr, there was an overheat and it destroyed the dpf and the scr was cleared. already with the new dpf this new problem appeared in the scr. my question is is it possible that the clogged scr causes the nox reading to increase on sensor 2? I have a very low reading on the pressure differential in the dpf, but when I remove the tube from the dpf outlet I have more normal pressure values ​​which suggests some clogging in the scr.

[@ElektroPartnerApS]

Hi Rui Faria. Its difficult to say if the rise is caused by the clogged DPF. To determine that i need to see a video with the data pids from page 5 in TSB no. 7666. If you can get your hands on a known good vehicle and measure this it would perhaps lead you closer to you question. Regards Martin

[@KnightIta07]

Hi Martin, Thanks for your work. I have same problem with my Alfa Stelvio Diesel 190cv with adblue. I found Only p20ee-00 error. Later i try check value from nox sensor One e two. Have you experience with this issue?. I change Pm10 sensor with official call from Alfa Romeo.

[@Jo-hannson]

Hi man, did you find the problem? I have a higher reading on my nox sensor 2 also and only p20ee error code

[@jamieg13132]

Anyone know how to access front nox sensor on the amarok. Bought the sensor removal tool but won't fit. Do u have to drop exhaust ?

[@Jasondickinson_vehicleservices]

Just a 22mm spanner 🤙🏼

[@dasouth1978]

P20EE can go any way if you work on a PSA vehicle. Please give some more info on why that code can set. ps : I've seen vehicles with 90k km & kat worn out with the same code.

[@ElektroPartnerApS]

Yes PSA 1.5 have big problems with the SCR catalyst at very low miles. Perhaps I can make a video one day with all the criteries to this fault code but most of this is already explained in TSB No. 7666 in DDTSB,