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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old April 13th, 2015, 18:08   #1
dee74
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Arrow UNOFFICIAL Adblue Heater Element Failure Thread

I have been reading a few threads on the failure of the Adblue heater Element lately and I thought I would start a thread to see if this is becoming a trend, my TDI is in the shop now with this same problem. Please list the following Info:

Year
Mileage
Warning Light(s)
Code(s)
Any symptoms or problems before diagnosis
Repair Time:
Any pertinent info from dealer


My Car

2012
58???
CEL
P205B
Large variations in mileage
Estimated 4 days
No info shared, repair is not covered under emissions warranty

Last edited by dee74; April 14th, 2015 at 03:47. Reason: added info
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Old April 13th, 2015, 19:04   #2
ajharbin
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2012
32,000
CEL
9688 reductant tank temp sensor and 2. 5523 engine start blocked by immobilizer
no symptoms of issue besides CEL
after getting the run around with VWoA it took 2 trips and on the second trip it took 4 days to repair.
Dealer said they have replaced a few of the sensors on other tdi models (ones that have DEF) but did not say they were a real issue. just turned over 40k and have not had any issues since the repair.
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Old April 14th, 2015, 07:19   #3
Sigforty
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Not sure if you want to count it, but my level sensor failed which is part of the same module.
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Old April 14th, 2015, 08:42   #4
dee74
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Quote:
Originally Posted by Sigforty View Post
Not sure if you want to count it, but my level sensor failed which is part of the same module.
Yes we will count sensor failure. I think mine may only be the temperature sensor, not sure yet, but the part only comes as a complete module with all of the sensors.
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Old April 14th, 2015, 09:05   #5
VeeDubTDI
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Temp sensor failure @ 80,000 miles. Heating element is fine. I'll have to get more details from Jason, since he is the one who scanned it.

No repair attempt yet... still driving it with no issues other than a check engine light.
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Old April 14th, 2015, 10:24   #6
TheGrove
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I would also like to know how low you usually ran your AdBlue before filling. Did you fill it at every service or wait for the warning before filling. Just wondering if there is a correlation or not.
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Old April 14th, 2015, 13:42   #7
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2012 Passat TDI. Current mileage 88,200 mi. This is what i have had replace so far in one month time frame (3/02/2015). 1. part # 7N0941329 control unit for reduction. control unit for reduction; agent metering system. 2. part# 3C0906651 evaluation unit for reduction. evaluation unit for reduction; agent reserve. 3. part # 561198970 heater element repair kit. Replace 15 days ago, check engine light back on took to vw dealer scan showing same code for heater element in adblue tank. Part # 561198970. Called Vw and waiting for answer on what they are going to do.
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Old April 14th, 2015, 15:33   #8
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Quote:
Originally Posted by TheGrove View Post
I would also like to know how low you usually ran your AdBlue before filling. Did you fill it at every service or wait for the warning before filling. Just wondering if there is a correlation or not.
We fill at every 10K service. I think it only counted down once because Jason wanted to see it count down.
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Old April 15th, 2015, 04:40   #9
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Quote:
Originally Posted by VeeDubTDI View Post
We fill at every 10K service. I think it only counted down once because Jason wanted to see it count down.
Sounds like me, thanks. So far no problems here (crossed fingers).
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Old April 15th, 2015, 07:16   #10
Sigforty
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2012
54944 mi.
CEL
P203B - Reductant level sensor
no indications of failure until CEL came on.
Repair Time: 1 day
They ran GFF and found faults for level sensor passive sporatic, ran test plan and found wiring was ok, so they replaced the sensor module. Cost was $1050 of which I paid $50 deductible on the certified warranty.
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Old April 15th, 2015, 21:18   #11
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im keeping mine full to prevent corrosion, only complaint is its easy to overfill- not a lot of sound change as it fills to the brim. Lucky for me I stuffed towels all around the filler
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Old April 16th, 2015, 06:04   #12
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Quote:
Originally Posted by VeeDubTDI View Post
We fill {the adblue tank} at every 10K service. I think it only counted down once because Jason wanted to see it count down.
It's been filled every 10k, and has never entered the countdown phase.

The sensor fault is intermittent. The CEL has been on and off a few times now.

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Maybe I should pay MYSELF to do bad work on my car!
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Old April 16th, 2015, 14:16   #13
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Well there you go. Shows what I know.
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Old April 17th, 2015, 06:15   #14
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Quote:
Originally Posted by jrm View Post
im keeping mine full to prevent corrosion, only complaint is its easy to overfill- not a lot of sound change as it fills to the brim. Lucky for me I stuffed towels all around the filler
I bought 1 bottle from the dealer that has the shutoff nozzle. If you take a hacksaw to the "childproof" lock on the cap you can refill the bottle. No muss, no fuss, no spills.
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Old April 17th, 2015, 06:32   #15
mtbsteve
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Year: 2012
Mileage: 52,743 miles
Warning Light(s): Check Engine, not flashing.
Code(s): P205B
Any symptoms or problems before diagnosis: Car was fine - cleared code, kept coming back.
Repair Time: 1 day to diagnose at dealer (even though I determined the error via Torque App and VAGCOM, 1 day to repair.
Any pertinent info from dealer: Dealer said that it would not be covered. I did a lot of research and I still believe that states that follow the CA emissions warranty should be covering this but they do not. I am in MA.

I have stated this info in more detail in an older post but in the end I was able to buy the part through the dealer using the online parts ordering before I booked the appt to fix it. They were not happy and tried to block and charge full retail but was able to get the part for $461. In the end I contacted VW who eventually paid for the part cost by cutting me a check since I have always (except once) had my car serviced at dealers and this should not fail.

Total cost breakdown:
$115 for diagnoses
$461 for part - I think retail it is $625+ for PN 561198970 (VW eventually reimbursed $461)
$315 labor
$20.95 shop charge
$11 urea

Last edited by mtbsteve; April 17th, 2015 at 06:36. Reason: added MA location for reference
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