Did you resolve this problem?
AdBlue Discussion and Issues
Hi
What can I say the van is running ok at the moment the service centre updated the software and did an egr flush. To be honest I have not done big mileages since but things seem to be ok for the moment. Sadly I have limited confidence that its a permanent fix!
EML light came on yesterday. I've just done a VCDS scan and got a whole load of strange fault codes relating to adblue and EGR.
I've (hopefully) attached a copy of the scan.
I did have an issue last week approx 1100miles ago when i filled the adblue and forgot to wait for the reset. However it reset after a few minutes of driving and had no issues on a 10 day drive round scotland-hence the 1100 miles in a week.
I've reset everything and been for a little spin and none have returned.
It appears that these codes were logged approx 1500 miles ago, which i find strange.
Any suggestions?
I've (hopefully) attached a copy of the scan.
I did have an issue last week approx 1100miles ago when i filled the adblue and forgot to wait for the reset. However it reset after a few minutes of driving and had no issues on a 10 day drive round scotland-hence the 1100 miles in a week.
I've reset everything and been for a little spin and none have returned.
It appears that these codes were logged approx 1500 miles ago, which i find strange.
Any suggestions?
If this turns into an ongoing saga I’ll be deleting everything or selling it. This sort of stuff infuriated me.
Yeah, I had an egr flush under warranty last June. Out of warranty now. But if new egr sorts it then I’m happy to do it. Just don’t want to be throwing money at stuff that doesn’t need doing only for the fault to remain.
15560 - EGR Sensor 1 - P046C 00 [108] - Implausible Signal
Intermittent - Confirmed - Tested Since Memory Clear
Fault Frequency: 1
Mileage: 178158 km
This has happened only once - at 178158 km.
33744 - NOx Sensor 1 Bank 1 Voltage Suppy - P220A 00 [096] - Electrical Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Fault Frequency: 13
Mileage: 178096 km
The fault has happened 13 times - first time at 178096 km. I believe the frequency counter is incremented by "1" per ignition cycle.
32203 - NOx Sensor 1 Bank 1 Voltage Suppy -P220A 00 [108] - Electrical Malfunction
Intermittent - Confirmed - Tested Since Memory Clear
Fault Frequency: 19
Mileage: 177715 km
31133 - Reductant Level Sensor - P203B 00 [040] - Implausible Signal
Intermittent - Confirmed - Tested Since Memory Clear
Fault Frequency: 47
Mileage: 178031 km
31131 - Reductant Tank Temperature Sensor - P205B 00 [032] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
Fault Frequency: 20
Mileage: 178038 km
The last two faults have happened very long time ago - because there is no freeze frame data any more.
31159 - Control Circuit for Reductant Pump 2 - P20FB 00 [096] - Mechanical Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
30540 - Throttle Position Sensor (G69) - P0121 00 [032] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
I think the only concerns are the ones with high fault frequency.
There is a mention about Voltage supply malfunction...
Then the reductant sensors can be read by VCDS... as well as the NOx sensor...
Just thinking back and a few weeks ago, probs about the right mileage for the above fault log, the EML came on after a few interrupted regens.
Took it for a blast up the motorway and it did a full long regen. Refuelled it and the light went off-never did a scan.
I wonder if it’s thrown the EML this week when the counter for the fault has reached a certain number if it’s happened again. Her indoors has been driving it to work and back this week.
She’s just driven the 16 mile rural/urban mix to work this morning and no light.
I’ll scan it again tomorrow and see if anything has reoccurred and pop an update on here.
Took it for a blast up the motorway and it did a full long regen. Refuelled it and the light went off-never did a scan.
I wonder if it’s thrown the EML this week when the counter for the fault has reached a certain number if it’s happened again. Her indoors has been driving it to work and back this week.
She’s just driven the 16 mile rural/urban mix to work this morning and no light.
I’ll scan it again tomorrow and see if anything has reoccurred and pop an update on here.
Certainly a good idea to keep on monitoring - to speed up the fault scan you could do engine only:
VCDS > Select Control Module > Engine > Fault Codes > Save Codes
As you have cleared the fault memory I'm curious to see how soon the emission status (PASS) will be restored.
I'm assuming currently it wouldn't pass MOT because of cleared fault memory.
The emission status can be seen as follows:
VCDS > OBD-II Functions > Mode 1-01 Readiness > Address 7E8 > Save
Could you please post the log.
Should be similar as below except not all as "Passed"
Probably yes. Also might be related to "Confirmed" status on some faults.
@mmi I’ve done the obd 11 thing but when I press save it wouldn’t save it. So here is a photo.D
Done 16miles twice today.
Also a scan of the engine shows the faults have returned but without throwing an EML.
Edit:- the obd2 data is on the scan log 13 times. Now I know where it went when I kept clicking save.
Done 16miles twice today.
Also a scan of the engine shows the faults have returned but without throwing an EML.
Edit:- the obd2 data is on the scan log 13 times. Now I know where it went when I kept clicking save.
Last edited:
I have only used vcds twice but looking at the pic above - maybe it won't save because it is still running diagnosis.
Thank you very much. I'm expecting the "failed" ones to return to "Passed" fairly soon. The fail is because of clearing the fault memory - actually here the meaning is "Adaptation cycle incomplete".Anyways, for now I'd ignore the P046C (see the bolded below)
15560 - EGR Sensor 1 - P046C 00 [100] - Implausible Signal
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 180512 km
Date: 2058.01.05
Time: 17:20:40
Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 89 °C
Exhaust recirc.valve 1 bank 1: posit.feedback - Specified value: 5.43 %
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: -6.23 %
It has been suggested this alone (no other EGR related fault) needs no action. Anyways, around Forum there are quite a few mentions about this fault but no definite explanation yet. Anyways here the big delta between specified and actual value might be an early indication of something... or perhaps not 
At shut-off engine sweeps EGR valve a few times from min to max.Was Stop/Start in use - did it shut off the engine?
The same kind of event logged also here:
Loss in BHP T32 204ps 2016 swb Manual [Resolved]
If the EGR valve is leaking when the engine is at optimum operating temperature then there is a constant flow of exhaust gases through the EGR cooler. No wonder the Euro 6 EGR coolers are blocking so regularly.
Load area LED bulbs go out after a few seconds...
Hi guys, bit of help needed. I have a T6 kombi, I've changed all the lights to LED and added some LED spotlights too. Problem I have is, they don't stay on for long enough when I open the tailgate. Literally a few seconds. Is this something I can change with VCDS? TIA
Where can I find EGR sensor 1?
Address 01: Engine (2D2D2-CXHA) Labels:. 04L-907-309-V2.clb Part No SW: 04L 906 056 KM HW: 04L 907 445 Component: R4 2.0l TDI H02 3800 Revision: 23002001 Coding: 00194014430401090000 Shop #: WSC 02737 790 50316 ASAM Dataset: EV_ECM20TDI03004L906056KM...
A related VCDS test plotted here:
2017 204 - DPF Filter at 60g soot above 50g forced regen limit
if the van has been driven around with a blocked dpf , would this cause the egr system to build up with carbon / coke / soot etc Might be the other way around according to this thread. by the way is there any guides on here for how to remove the egr valve from a t6, as this looks like the...
The other one probably needs attention. Can you estimate how long the van was driven (since engine start) at 16:09:08 (odometer 112183 miles) - possibly about 10-15 minutes? (That's when NOx measurement kicks in) - just curious
32203 - NOx Sensor 1 Bank 1 Voltage Suppy
P220A 00 [096] - Electrical Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 6
Mileage: 180542 km
Date: 2058.01.06
Time: 16:09:08
So 112192 was arrival home on a 16 mile commute, so 112183 was 7 miles into the journey so probs about 15 minutes in traffic. She says she left work at 1550hrs.
Anyways, for now I'd ignore the P046C (see the bolded below)
15560 - EGR Sensor 1 - P046C 00 [100] - Implausible SignalIntermittent - Not Confirmed - Tested Since Memory ClearFreeze Frame:Fault Status: 00000001Fault Priority: 2Fault Frequency: 1Mileage: 180512 kmDate: 2058.01.05Time: 17:20:40Engine RPM: 0.00 /minNormed load value: 0.0 %Vehicle speed: 0 km/hCoolant temperature: 89 °CExhaust recirc.valve 1 bank 1: posit.feedback - Specified value: 5.43 %Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: -6.23 %It has been suggested this alone (no other EGR related fault) needs no action. Anyways, around Forum there are quite a few mentions about this fault but no definite explanation yet. Anyways here the big delta between specified and actual value might be an early indication of something... or perhaps not
Was Stop/Start in use - did it shut off the engine?
The same kind of event logged also here:
Loss in BHP T32 204ps 2016 swb Manual [Resolved]
If the EGR valve is leaking when the engine is at optimum operating temperature then there is a constant flow of exhaust gases through the EGR cooler. No wonder the Euro 6 EGR coolers are blocking so regularly.www.t6forum.com
Load area LED bulbs go out after a few seconds...
Hi guys, bit of help needed. I have a T6 kombi, I've changed all the lights to LED and added some LED spotlights too. Problem I have is, they don't stay on for long enough when I open the tailgate. Literally a few seconds. Is this something I can change with VCDS? TIAWhere can I find EGR sensor 1?
Address 01: Engine (2D2D2-CXHA) Labels:. 04L-907-309-V2.clb Part No SW: 04L 906 056 KM HW: 04L 907 445 Component: R4 2.0l TDI H02 3800 Revision: 23002001 Coding: 00194014430401090000 Shop #: WSC 02737 790 50316 ASAM Dataset: EV_ECM20TDI03004L906056KM...
A related VCDS test plotted here:
2017 204 - DPF Filter at 60g soot above 50g forced regen limit
if the van has been driven around with a blocked dpf , would this cause the egr system to build up with carbon / coke / soot etc Might be the other way around according to this thread. by the way is there any guides on here for how to remove the egr valve from a t6, as this looks like the...
The other one probably needs attention. Can you estimate how long the van was driven (since engine start) at 16:09:08 (odometer 112183 miles) - possibly about 10-15 minutes? (That's when NOx measurement kicks in) - just curious
32203 - NOx Sensor 1 Bank 1 Voltage Suppy P220A 00 [096] - Electrical MalfunctionIntermittent - Not Confirmed - Tested Since Memory ClearFreeze Frame:Fault Status: 00000001Fault Priority: 2Fault Frequency: 6Mileage: 180542 kmDate: 2058.01.06Time: 16:09:08
Talking to the dotty Doris she states start/stop activated once, and from her description it was probably about the 2 mile mark into her journey, which is probably between 5 and 10 minutes.
It did save, just without a pop up box appearing. Hence I had 13 copies of the same report.
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