error code P20EE SCR Nox Catalyst

[Mick]

Hi I am in Austria. I travelled out last week.

On the way out I got a warning that my Ad Blue was at 600 miles. So I filled up the ad blue tank and it only took 8l: I thought it was 13 l tank. I checked the Carista and I got an error code P20EE SCR Nox Catalyst below threshold. So I reset it, Ad Blue still showed 600 mile, the warning was still there but about 70 m miles later jumped to 6000 and stayed there despite me doing about 800 miles. The error code came back the following morning after about 600 miles of motorway driving but the van is running fine just seems to be down on MPG. Any ideas? It is still under an extended warranty.

Another strange one is that my fan on 1, 2 & 3 isn't working. level 4 is fine. If I switch on the the aircon it works as it should on 1 - 4 i.e. off when switched off and on when fan on. The recirculation button also failed but is now back. Again any ideas?

Anyway off to the slopes!

 

[Loz]

3 different issues.
1st adblue needs a sofftware update/fix
2nd often related to failed regenerations @mmi is your man for these
3rd, you have a blown heater resister.

 

[Mick]

3 different issues.
1st adblue needs a sofftware update/fix
2nd often related to failed regenerations @mmi is your man for these
3rd, you have a blown heater resister.

I did a forced regen 2 months ago.

I’ll get it under the extended warranty and get the others sorted.

 

[prog99]

I did a forced regen 2 months ago.

I’ll get it under the extended warranty and get the others sorted.

Should be fine with #3 under warranty Heater only working at maximum

 

[Mick]

3 different issues.
1st adblue needs a sofftware update/fix
2nd often related to failed regenerations @mmi is your man for these
3rd, you have a blown heater resister.

@mmi any advice?

@Loz - Once again the ACC failed when i got out of the chunnel . Hit a bump in road joining the M11 and it was back. So that's getting sorted as well.

I could be extending the warranty for another year

 

[Paynewright]

To me, with a long journey imminent, adblue is like oil, water and tyre checks - you don’t have to wait till the dash warning appears.

I’ve also posted in other threads that I believe keeping it well topped up will prevent some of the faults. With a greater proportion of air in the tank the adblue is more likely to crystalise (I’ve seen it do this on the 2L top up bottle I reuse to fill small / measured quantities). Only a theory - time will tell.

Ian

 

[Mick]

To me, with a long journey imminent, adblue is like oil, water and tyre checks - you don’t have to wait till the dash warning appears.

I’ve also posted in other threads that I believe keeping it well topped up will prevent some of the faults. With a greater proportion of air in the tank the adblue is more likely to crystalise (I’ve seen it do this on the 2L top up bottle I reuse to fill small / measured quantities). Only a theory - time will tell.

Ian

My Ad Blue was initially showing 4000 miles when I left (2500 return journey to Austria) and then the error appeared telling me it was at 600 miles after i'd driven 100 miles down the M40. Topped it right up and it took 8 litres so in a 13l tank something is amiss. I'll take @Loz advice and discuss a SW update with the service guys.

 

[mmi]

@mmi any advice?

Most likely 1st and 2nd would be cured by a software update.

The 2nd without emission light on dash (yellow engine) is not a significant. Unfortunately Carista doesn't distinguish if the fault is active or just a glitch recorded sometime in the past.

To confirm that please post "Detailed ECU info"-report (under Carista Service menu)

 

[Mick]

View attachment 152565

Most likely 1st and 2nd would be cured by a software update.

The 2nd without emission light on dash (yellow engine) is not a significant. Unfortunately Carista doesn't distinguish if the fault is active or just a glitch recorded sometime in the past.

To confirm that please post "Detailed ECU info"-report (under Carista Service menu)

The engine light came in on the 2 NOx event.

From the codes below I think I need the ACC sorting out.

DETAILED ECU INFO

ECU info obtained with Carista 640099 for iOS:

VIN: WV1ZZZ7HZHH159040

Engine
Part #: 04L906056KQ
Component: R4 2.0l BTD
Software version: 3775
ASAM/ODX identifier: EV_ECM20BTD03004L906056KQ
Coding: 00254014436501080000 (hex)
[No fault codes]

Transmission
Part #: 0BT300046J
Component: DSG DQ500-7F
Software version: 5302
ASAM/ODX identifier: EV_TCMDQ500021
Coding: 0014 (hex)
[No fault codes]

ABS
Part #: 7E0907379Q
Component: ESC
Software version: 0133
ASAM/ODX identifier: EV_Brake1ESCCONTIVN75XGP2
Coding: 557E409865678487AA75027AA68221E679F700 (hex)
[No fault codes]

Instrument cluster
Part #: 7E0920970S
Component: KOMBI
Software version: 1107
ASAM/ODX identifier: EV_Kombi_UDS_VDD_RM09
Coding: 440F010300 (hex)
[No fault codes]

Airbags
Part #: 7E0959655G
Component: VW10Airbag021
Software version: 0018
ASAM/ODX identifier: EV_AirbaVW10BPAVW12X
Coding: 000000000000000000000000000000003231 (hex)
[No fault codes]

Steering angle
Part #: 6R0959654
Component: LENKW.SENSOR
Software version: 0070
ASAM/ODX identifier: EV_LWSKLOVW25X
Coding: 01 (hex)
[No fault codes]

Headlight aiming
Part #: 6R0907357C
Component: AFS-ECU
Software version: 0050
ASAM/ODX identifier: EV_HeadlRegulVWLWRCC
Coding: 0FCE020001000000 (hex)
Fault codes:
5275648 Left/Right driving switch-over active

Parking/steering assist
Part #: 7E0919475AA
Component: PARKHILFE 8K
Software version: 0212
ASAM/ODX identifier: EV_VW75XParkAssis8K
Coding: 31810C (hex)
[No fault codes]

Heater & air conditioning
Part #: 7E0907047AC
Component: Climatic-T5
Software version: 0708
ASAM/ODX identifier: EV_ClimaticT5
Coding: 0000000003 (hex)
[No fault codes]

Trailer
Part #: 1K0907383F
Component: ConWysTrailer
Software version: 0100
ASAM/ODX identifier: [none]
Coding: 0100000100000000 (hex)
[No fault codes]

Central electronics
Part #: 7E0937090B
Component: BCM PQ25 Max4
Software version: 0744
ASAM/ODX identifier: [none]
Coding: B8AC393A0A63341193284F607CEF9FFCC08C738960CD79603204003F0860 (hex)
[No fault codes]

CAN network gateway
Part #: 7E0909901
Component: GW-K-CAN TP20
Software version: 0744
ASAM/ODX identifier: [none]
Coding: 042307 (hex)
[No fault codes]

Immobilizer
Part #: 5K0953234
Component: IMMO
Software version: 1107
ASAM/ODX identifier: EV_Immo_UDS_VDD_RM09
Coding: 000000 (hex)
[No fault codes]

Adaptive cruise control
Part #: 7N0907572C
Component: ACC Bosch PQx
Software version: 0211
ASAM/ODX identifier: EV_ACCBEGVW361
Coding: 00005800FE0779 (hex)
Fault codes:
01540 Headlights are being lowered
01541 Headlights are being raised
01130 ABS Operation
01132 Front Infrared Sensor (G166)
01131 Control Circuit for Turn Signals (Blinking Light Activation)
01542 Yaw Rate Sensor (G202)
01545 Sensor for PDC Rear Left (G203)

Battery regulator
Part #: 7E0907534
Component: Batt.regelung
Software version: 0744
ASAM/ODX identifier: [none]
Coding: 030B1A73 (hex)
[No fault codes]

High beam assist
Part #: 7E0857511F
Component: FLA
Software version: 0003
ASAM/ODX identifier: EV_HighBeamAssisAU316
Coding: 040401E200000100000000 (hex)
[No fault codes]

Infotainment system
Part #: 5C0035680E
Component: MU-S-ND-ER
Software version: 0363
ASAM/ODX identifier: EV_MUStd4CTSAT
Coding: 065700013C00000011111101008808001F0100D6002001004F (hex)
[No fault codes]

Obtained with Carista 640099 for iOS.
Download app: ‎Carista OBD2
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Regards

Mick Kelly

 

[mmi]

The engine light came in on the 2 NOx event.

From the codes below I think I need the ACC sorting out.

There should be a software update available for the engine.

Re the ACC - does it work?

For the actual faults see here:

VCDS And Carista Fault Codes

Any ideas anyone on fault code 16399? I got a flashing glow plug symbol just as I got on the ferry to France. Then an engine one when we disembarked...

www.t6forum.com

However, Carista doesn't distinguish whether the faults are active or just a listing from the past.

---

Did you clear the faults at the time?

Engine Warning Light

Evening ladies and gents well, it had to happen sooner or later! I was driving up a steep hill this morning when I sensed something wasn't right. I looked down and saw the amber heater plug symbol light up. I stopped and switched off the ignition and then re started and it's been fine the rest...

www.t6forum.com

The 1540 was not in the earlier log.