Well, approx 10,500 miles later the codes & the countdown came back on for the AdBlue.
Code:
Sunday,15,February,2015,21:43:38:03916
VCDS Version: Release 14.10.1 (x64)
Address 01: Engine Labels: 059-907-401-CAT1.clb
Control Module Part Number: 7L0 907 401 T HW: 7L0 907 401 K
Component and/or Version: 3.0TDI EDC17G004AG 0100
Software Coding: 0421002A590F0D68
Work Shop Code: WSC 40662 001 1048576
VCID: 3C778E167C64EBC1728-5124
3 Faults Found:
008430 - SCR NOx Catalyst Bank 1
P20EE - 001 - Efficiency too Low - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 158857 km
Time Indication: 0
Date: 2015.01.28
Time: 14:47:38
Freeze Frame:
RPM: 2331 /min
Speed: 117.6 km/h
Voltage: 14.59 V
Temperature: 288.0*C
(no units): 0.52
(no units): 0.63
(no units): 1.20
008251 - Reductant Level Sensor
P203B - 001 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 13
Reset counter: 255
Mileage: 160573 km
Time Indication: 0
Date: 2015.02.12
Time: 14:42:24
Freeze Frame:
RPM: 777 /min
Voltage: 13.98 V
Load: 12.2 %
Temperature: -5.4*C
4.9 bar
Temperature: 7.2*C
008319 - Reductant Quality Performance
P207F - 000 - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 160755 km
Time Indication: 0
Date: 2015.02.15
Time: 21:26:16
Freeze Frame:
RPM: 2205 /min
Speed: 112.0 km/h
Voltage: 13.98 V
Temperature: 264.0*C
(no units): 0.00
(no units): 0.29
(no units): 1.47
Readiness: 1 1 0 0 0
I tried a couple of things last night to resolve the above issues, but the 008319 Reductant Quality Performance keeps coming back on along with a warning that I have 450 miles until no restart.
Here's what I did:
I pulled the AdBlue injector out of the exhaust system and noticed that the port the nozzle sits in was approx 90% blocked with crystallized AdBlue.
I also checked the nozzle itself and it wasn't that dirty, but cleaned it off as best I could. Here is a picture before cleaning.
Please note that the part # has now been superseded to suffix "C".
Here is the port the nozzle sits in after cleaning and sucking out the debris.
I thought this would surely solve my issue, but after doing a hard reset via pulling the fuse, the low AdBlue light & 450 mile warning came back on. Only 1 fault code showed up this time though.
Code:
Monday,16,February,2015,18:26:53:03916
VCDS Version: Release 14.10.1 (x64)
Address 01: Engine Labels: 059-907-401-CAT1.clb
Control Module Part Number: 7L0 907 401 T HW: 7L0 907 401 K
Component and/or Version: 3.0TDI EDC17G004AG 0100
Software Coding: 0421002A590F0D68
Work Shop Code: WSC 40662 001 1048576
VCID: 3C778E167C64EBC1728-5124
1 Fault Found:
008319 - Reductant Quality Performance
P207F - 000 - - MIL ON
Freeze Frame:
Fault Status: 11100000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 160820 km
Time Indication: 0
Date: 2015.02.16
Time: 17:56:23
Freeze Frame:
RPM: 2310 /min
Speed: 40.3 km/h
Voltage: 14.14 V
Temperature: 246.0*C
(no units): 0.00
(no units): 0.22
(no units): 1.47
Readiness: 1 1 0 0 0
I tried to remove the rear Nox sensor to clean it like Jack suggested, but I couldn't get it to budge. I put some PB blaster on it and am letting it soak in and will try again tonight.
I'm open to thoughts or suggestions on what else to check. I'm wondering if the low temp here in Michigan the last few days is playing a part on the 008251 Reductant level sensor. I know the AdBlue will freeze at approx 12F and we've been in the -10 to +10 range these last few days. Granted there is a AdBlue heater, but not sure how quickly / effectively it works in these temps.