Seat Alhambra 2.0 Tdi CFFB - Adblue, resetting the light after adding

Hello,
I have a question about the Adblue system in a 2012 Seat Alhambra 2.0 tdi cffb car.
After refilling the fluid , the system does not see this fact. Displays meadblue light and distance to go which is decreasing .
What is the procedure after topping up the liquid? You have to wait with the ignition on or should immediately be detected full tank of liquid?

In Vcds I made in adaptations : "Resetting of SCR tank level detection"
because it seems to me that this function is responsible for the reset? but it does not help.

Was there an error from the NOX sensor in the engine controller

Yes there was a NOX error, the car could not be started, errors cleared do not return. The car starts , drives. In adaptations I also selected learned Nox sensor. . did not help

To do a flash of the engine controller, it should extinguish the light , if not you need to do an adaptive driving.To replace also the NOX sensor because the fault will return and will light the check engine light.
What controller number and software version ?

Address 01: Engine
Control Module Part Number: 03L 906 018 HL
Component and/or Version: R4 2.0L EDC H24 9959
Software Coding: 0019001A043401080000
Work Shop Code: WSC 80232
VCID: 7BF5116EF2456DC6C11-802E

Advanced Identification/FAZIT
Serial number:
Identification: BPG-810
Revision: 44H24---
Date: 21.02.11
Manufacturer number: 1236
Test stand number: 0179
Flash Status
Programming Attempts(application): 1/1/1
Successful Attempts(application): 1/1/1
Flash Date: 12.08.20
Misc.
Hardware number: 03L 906 018 M


and the errors were as follows :



9567 - NOx Sensor 2 Bank 1
P229F 00 [237] - Implausible Signal
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 24
Mileage: 43606 km
Date: 2026.14.30
Time: 11:33:00

15733 - SCR NOx Catalyst Bank 1
P20EE 00 [237] - Efficiency too Low
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 48403 km
Date: 2035.14.22
Time: 12:56:04

4891 - EGR Valve (N18)
P0403 00 [096] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 48403 km
Date: 2035.14.22
Time: 12:56:04

You can see that the flash is done.Sensor to be replaced.In VAS special procedure to disable the adblue message,time consuming but doable.Adblue is best to add to full, or min. 10 l.As for the problem in firing it is egr that is the cause.

Adblue was added to full , stood for several minutes on the ignition on and nothing If it passes the mileage limit the car will not start or what happens? And this egr is a replacement for a new one or a cleaning which I don't believe myself ???The car has such low mileage and here such surprises.

I had a car where the mileage limit passed and it fired up.I wrote that it does not fire up because of the egr because there was an error,maybe the car was standing and failed.I had a case that it died and did not fire up - it turned out that it hung up in the open position.It is very easy to check in these engines - plug the wire at the head.As for the procedure for these errors from the NOx sensor is service information in VW/SEAT, as for the egr too.

With EGR in this car for several months was able to light up check and go out. And the NOx errors are only now popping up. This hint from your side Jack about replacing the sensor is I understand from the service information? I'm asking because the controller does not generate any errors and the adblue light did not go off after adding it, hence my post on the forum, and with the adblue system and in fact its failure I have to deal with for the first time.

Yes my hint based on service inf. , the fault from the sensor will probably return (I know it is not cheap) but without replacement the procedure is unlikely to pass.

I'll bump up the topic if you don't mind.
Is adding a few liters of adBlue before the light forcing the addition and playing around with the resetting correct ?
Purely theoretical I wonder if keeping the fluid level above the signaled level is a way to avoid the above complications.

Procedure after adding Adblue ?

as it lit up for me after about 200 lit up check engine, then I added 2 or 3 l (expensive at stations abroad) , after about 50 km adblue went off, unfortunately check engine did not, it's nox and I do not know if it was related, the light I erased and now I have again after about 400 km, something I feel that I am waiting for a replacement nox.

Hello
Here's the problem:
Error on nox2 but on nox1 emission value 0 ppm, I can't find the exhaust gas temp. sensor 2, is it together with Nox1?
Errors on the engine cleared, but the adble light continues to light up and count km.

Address 01: Engine Label file: 03L-906-018-CFF.clb
Item designation: 03L 906 018 HL HW: 03L 906 018 M
Component and/or version: R4 2.0l TDI H27 9981
Coding: 0019001A042401080000
Service code: WSC 85861 120 00000
ASAM dataset: EV_ECM20TDI01103L906018HL 003014 (VW36)
ROD: EV_ECM20TDI01103L906018F_VW36.rod
VCID: 7BF5371DF251BC9C74-802E
2 - number of errors found. Here they are:

9567 - Sensor 2 NOx; assembly 1
P229F 00 [101] - unreliable signal
Unconfirmed - Tested from clearing error codes
Freeze frame:
Error status: 00000001
Error priority: 2
Error frequency: 1
Mileage: 149292 km
Date: 2065.14.23
Time: 19:17:06

Engine speed: 2292.50 /min
Normalized load value: 0.0 %
Vehicle speed: 105 km/h
Coolant temperature: 87 °C
Intake air temperature: 28 °C
Atmospheric pressure: 970 mbar
Terminal 30 voltage: 14,960 V
Recall cycle count after OBD: 40
Air mass: actual value (mg/stroke): 616.8 mg/stroke
Average injection rate: 0.00 mg/stroke
Exhaust gas recirculation (EGR) valve: control: 100.00 %
NOx emissions: NOx sensor 1: 0 ppm
NOx emissions: NOx sensor 2: 259 ppm
Calculated NOx concentration after turbocharger: 0 ppm


15733 - SCR NOx catalyst; unit 1
P20EE 00 [101] - efficiency too low
Unconfirmed - Tested from clearing error codes
Freeze frame:
Error status: 00000001
Error priority: 2
Error frequency: 1
Mileage: 149180 km
Date: 2065.14.23
Time: 18:08:47

Engine speed: 2506.00 /min
Normalized load value: 0.0 %
Vehicle speed: 137 km/h
Coolant temperature: 88 °C
Intake air temperature: 24 °C
Atmospheric pressure: 980 mbar
Clamp voltage 30: 14,360 V
Post OBD recovery cycle counter: 40
Long-term adjustment of reducing agent dosage: 1.00
Measured NOx conversion: -0.500
Calculated NOx conversion efficiency: 0.910
Threshold NOx conversion efficiency: 0.300
Current temperature in NOx reduction catalyst: 300.9 °C

Standby codes: 0 0 0 0 0

Address 01: Engine (03L 906 018 HL)

10:50:43
IDE03129 Reducing medium pump: control 14.59 %.
IDE03131 Reducing agent injector: activation 0.00 %
IDE03132 Reducing agent pressure sensor: measured pressure 4999 hPa
IDE03135 Reducing agent tank temperature sensor: temperature 22.1 °C
IDE03136 Reducing agent level sensor: level 80.19 %
IDE03140 NOx sensor 1: NOx concentration 0 ppm
IDE03141 NOx sensor 2: NOx concentration 147 ppm
IDE03768 NOx sensor 1: supply voltage 0 mV
IDE03769 NOx sensor 2: supply voltage 12480 mV
IDE04098 NOx sensor NOx11:--- / NOx21:65535 ppm
IDE02229 Exhaust gas temperature sensor 1 20.0 °C
IDE02233 Exhaust temperature sensor 2 -0.0 °C
IDE02234 Exhaust temperature sensor 3 40.4 °C
IDE03270 Exhaust temperature sensor 1: raw voltage 4994.8 mV
IDE03271 Exhaust temperature sensor 2: raw voltage 0.0 mV
IDE03273 Exhaust temperature sensor 3: raw voltage 4672.2 mV
IDE03275 Exhaust gas temperature sensor 4: raw voltage 4770.2 mV
IDE03768 Exhaust gas sensor 1 NOx: raw voltage 0 mV
IDE03769 Exhaust gas sensor 2 NOx: raw voltage 0 mV
IDE04255 Exhaust gas recirculation temp sensor after radiator: raw value. -270.6 °C
IDE04256 Engine coolant temp. sensor: raw voltage 2111.2 mV
w/me to replace nox1.
Please help

Everything is written above. Exhaust gas temp sensor 2 do not look for it because there is none in this engine.

Something more about the procedure for extinguishing this vcds em light I can find out

Reset in the board. Reset in the engine, sometimes firing and driving in different conditions for up to 30 min.

Hello

you will not reset it, you must eliminate the cause,
and the cause is most likely the Nox probe.

replace the probe and drive evenly then it will go out.

Greetings

Hello
I own a VW Passat b8, error on the dashboard - adblue malfunction and km limit...
Error from VCDS 29630 ( P218F attached) - according to the service center adblue pump malfunction.
Pump replaced - message still on the dashboard , error in VCDS does not return





Please help.

The eternal problem with SCR.

Drop the clamps, then reset in the dashboard, in the engine and test drive.
Drive rather hard, and if necessary, burn it out.

vw t6 has an option in which you enter in the engine odis.
then right button and at the bottom you have scr options.
then option number 6 probably " delete the error on the dashboard"

and done.

I mean that many times this is not enough. And you need to play longer pie......

Hello

you do not need to delete anything as it does not disappear by itself it means that something is wrong.
generally as you pour it turn the key and wait until you start the engine, and that's all, the message should disappear

Greetings.