Fault codes Nox, adblue and 33782 & 31353 & 31164

[Jontutts]

Hi, I've recently bought a t6. Within a couple of days it had an EGR fault which the garage fixed. Now these codes have appeared. Any suggestions?

 

[mmi]

Please post "Detailed ECU info"-report (under Carista Service menu)

 

[Jontutts]

Please post "Detailed ECU info"-report (under Carista Service menu)

ECU info obtained with Carista 6.2.1 for Android:

VIN: WV1ZZZ7HZHH0*****

Engine
Part #: 04L906056KA
Component: R4 2.0l TDI
Software version: 4047
ASAM/ODX identifier: EV_ECM20TDI03004L906056KA
Coding: 00114014432401090000 (hex)
Fault codes:
33782 Manufacturer-specific code
31353 Manufacturer-specific code
32861 Manufacturer-specific code

ABS
Part #: 7E0907379P
Component: ESC
Software version: 0133
ASAM/ODX identifier: EV_Brake1ESCCONTIVN75XGP2
Coding: 517E4098256484818A7C0279A48921E6790000 (hex)
[No fault codes]

Instrument cluster
Part #: 7E0920970S
Component: KOMBI
Software version: 1104
ASAM/ODX identifier: EV_Kombi_UDS_VDD_RM09
Coding: 450B010300 (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]

Parking/steering assist
Part #: 7E0919475T
Component: PARKHILFE 4K
Software version: 0212
ASAM/ODX identifier: EV_VW75XParkAssis4K
Coding: 10800A (hex)
[No fault codes]

Heater & air conditioning
Part #: 7E0907047AK
Component: Climatic-T5
Software version: 0708
ASAM/ODX identifier: EV_ClimaticT5
Coding: 0000000003 (hex)
[No fault codes]

Central electronics
Part #: 7E0937090B
Component: BCM PQ25 Max4
Software version: 0744
ASAM/ODX identifier: [none]
Coding: A0A4303A0A61343193284F746CEB8E740F84708F60CC6D60320400220840 (hex)
Fault codes:
01134 Alarm Horn (H12)

CAN network gateway
Part #: 7E0909901
Component: GW-K-CAN TP20
Software version: 0744
ASAM/ODX identifier: [none]
Coding: 042305 (hex)
[No fault codes]

Immobilizer
Part #: 5K0953234
Component: IMMO
Software version: 1104
ASAM/ODX identifier: EV_Immo_UDS_VDD_RM09
Coding: 000000 (hex)
[No fault codes]

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

Infotainment system
Part #: 1K8035150L
Component: MU-E-D-ER
Software version: 7067
ASAM/ODX identifier: EV_MUEnt4CGen2LGE
Coding: 065700003C00000041111101008000001F0000C60000010201 (hex)
Fault codes:
00523 Intake air temperature sensor (G42)

 

[Jontutts]

 

[Jontutts]

The engine light is back on and these codes have come back.

 

[Jontutts]

Appreciate any input

 

[mmi]

The engine light is back on and these codes have come back.

Plot thickens.... U02A3 = No communication with particulate sensor.
NOx sensor and particulate sensor are both located behind DPF (diesel particulate filter) so probably good idea to check the wiring in that area. Chewed wires perhaps?

 

[Jontutts]

Cheers, I will have a look over the weekend.

Many thanks, Jon

 

[Jontutts]

Plot thickens.... U02A3 = No communication with particulate sensor.
NOx sensor and particulate sensor are both located behind DPF (diesel particulate filter) so probably good idea to check the wiring in that area. Chewed wires perhaps?

I've just had a quick look and there's no obvious damage from underneath. Is there a fuse to the circuit which may have blown?

 

[mmi]

Is there a fuse to the circuit

Yes, fuse SB28 (15A) - in fuse holder B

T6 - Fuse Box layout map Box B

www.t6forum.com

 

[Unimog]

I wonder if part of the problem is the Nox unit is effected by the heat from the dpf, as its mounted behind the heat shield above it. At times I noticed the floor is warm between the front seats .

 

[Unimog]

I believe this shows my soot level in the dpi.

 

[Jontutts]

Solved, it was a broken earth under the passenger seat