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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 January 10th, 2016, 20:53   #46
jrm
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Quote:
Originally Posted by PacoTDI View Post
Got CEL today for NOx sensor, iam at 110,000Km so warranty is long gone. Took it out sprayed it with carb cleaner until i could see true all the holes , took hair blower to dry it out and reinstalled. Reset CEL with OBD2 , so far so good.
Be careful use a 22mm open socket and heat with torch arround sensor before disassembling.
Good Luck worth the try.
good to know its cleanable, where is this sensor located?
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Old January 11th, 2016, 08:12   #47
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Since my purchase of my 2012 Passat TDI, used at 22,293 miles in May 2015, I too have had issues with the NOx sensor. Below is my history of flags I cleared vs time and date:
Date Milage Code No.
5/23/2015 22660 15733 - SCR NOx Catalyst Bank 1 - P20EE 00 [236] - Efficiency too Low
8/26/2015 25483 18627 - NOx Sensor 1 Bank 1 - P2200 00 [096] - Electrical Malfunction18627 **&** NOx Sensor 1 Bank 1 - P2200 00 [096] P20EE 00 [172] - Efficiency too Low
9/5/2015 25920 15733 - SCR NOx Catalyst Bank 1 - P20EE 00 [236] - Efficiency too Low
9/9/2015 26222 18627 - NOx Sensor 1 Bank 1 - P2200 00 [096] - Electrical Malfunction18627 **&** NOx Sensor 1 Bank 1 - P2200 00 [096] P20EE 00 [172] - Efficiency too Low
9/21/2015 26687 18627 - NOx Sensor 1 Bank 1 - P2200 00 [096] - Electrical Malfunction18627 **&** NOx Sensor 1 Bank 1 - P2200 00 [096] P20EE 00 [172] - Efficiency too Low
1/2/2016 29653 18627 - NOx Sensor 1 Bank 1 - P2200 00 [096] - Electrical Malfunction18627 **&** NOx Sensor 1 Bank 1 - P2200 00 [096] P20EE 00 [172] - Efficiency too Low
The September readouts that popped up frequently was during my attempts to clean the sensor. As you can see I had a good 3+ month run for 3k miles before it popped up again on a recent 500 mile weekend trip.

Yesterday I performed my 30k oil change and reset the code. I'm hoping the fresh oil will calm this down. The care was service by a VW dealer before my purchase, but I can't vouch for the oil used then. I opted to use the Quartz INEO Long Life ACEA/API 5W-30.

My initial response was to buy the expensive sensor, but as I've read that cleaning may solve the issue, and oil could be an issue. The car consumed 2.25 gallons of Urea in around 7500 miles.

I will post if and when these errors pop up again.
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Old January 11th, 2016, 13:57   #48
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The Sensor is located about half way to the tail pipe. Looks like a O2 sensor. Cant miss it.
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Old January 11th, 2016, 14:14   #49
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the one by the exhaust throttle, good to know its cleanable and accessible
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Old February 17th, 2016, 03:53   #50
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I also got a NOx sensor failure. It happened with only 33,745 miles. Cost to replace was $1,035.92 at VW of Alexandria.

I agree with the comments that should be a warranty fix. Not feeling the VW love right now.

Anyone have any luck getting any $ back from VW North America? If so please post some tips!!
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Old February 24th, 2016, 08:47   #51
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This appears to be tracking thread on NOx failures. 2012 Passat SE TDI w/48,000 mi. My car is also in for a NOx sensor, it's being replaced today under 80K mi emissions warranty.
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Old February 25th, 2016, 06:29   #52
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Quote:
Originally Posted by AtlantaRene View Post
This appears to be tracking thread on NOx failures. 2012 Passat SE TDI w/48,000 mi. My car is also in for a NOx sensor, it's being replaced today under 80K mi emissions warranty.
Can you share how you got this covered under warranty? My dealer (Alexandria VW) says the NOx is not one of the covered parts. Any help will be much appreciated!!
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Old February 25th, 2016, 16:56   #53
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Originally Posted by 1gunther1 View Post
Can you share how you got this covered under warranty? My dealer (Alexandria VW) says the NOx is not one of the covered parts. Any help will be much appreciated!!
The dealer volunteered to do it under the emissions warranty and for that I am grateful.
I am not an expert on this and I understand that there may be some variation state-by-state. I will reference what I know from the State of Georgia. The EPA requires an emissions warranty of 8 years/80,000 miles on all cars sold since 1995. It includes parts and labor on "certain" emission components, the car may need to be unmodified, and it depends if your state requires you to maintain the emission system. I have yet to check the documentation that came with my car; however, here is a reference from the EPA that might apply, it suggests a verification procedure and recourse too. http://www3.epa.gov/obd/pubs/420f15035.pdf
Good luck in what you find.
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Last edited by AtlantaRene; February 25th, 2016 at 17:09.
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Old February 25th, 2016, 18:10   #54
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Quote:
Originally Posted by 1gunther1 View Post
Can you share how you got this covered under warranty? My dealer (Alexandria VW) says the NOx is not one of the covered parts. Any help will be much appreciated!!
I just realized that the exhaust system is complicated on the car. To avoid confusion, I want to make sure that we are talking about the same repair. I have the invoice in front of me it states as follows:
REPLACE NOX SENSOR/MODULE
995846
03L-907-807-AD CONTROLUNI
The discussion states "replace nox sensor with module"
So even though the statement says replace NOx sensor, the part number may refer to a "control unit".

I hope this helps.
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Last edited by AtlantaRene; February 25th, 2016 at 18:17.
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Old February 26th, 2016, 09:00   #55
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My invoice has the exact same numbers and description. I have written VWNA to see what they have to say. But so far nothing but crickets

Yes it helps. Thank you for the reply

Anyone else with any tips on how to get VW to cover this known weakness would be much appreciated!!
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Old February 26th, 2016, 15:38   #56
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For everyone asking "Why is the module being replaced if it is saying the sensor is faulty", well... The sensor is calibrated to the module and they are only sold as one unit.



That's also the reason it lists for $528
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Old February 27th, 2016, 16:15   #57
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I cleaned mine about 1500 miles ago and so far the code has not returned. If the car is out of warranty, I would advise cleaning it before replacing it.
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Old February 27th, 2016, 19:15   #58
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@Fixmy59bug: Thanks, I was wondering.

I noticed that the part 03L-907-807-AD and it replaces part number 8K0-907-807-E. I was wondering if this was an indicator if the part was redesigned/revised. Is the NOx sensor problem localized to the earlier model years?
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Old February 28th, 2016, 04:18   #59
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Originally Posted by mountain-valleymotors View Post
I cleaned mine about 1500 miles ago and so far the code has not returned. If the car is out of warranty, I would advise cleaning it before replacing it.
Did you put together a DYI on the cleaning procedure?
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Old February 28th, 2016, 07:30   #60
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No I didn't put together a DIY but it is really very simple. Just unscrew the sensor and then I sprayed the holes with starting fluid (Mass Air Sensor cleaner would work too) until it sprayed out all of the holes evenly. Then screwed it back in and cleared the code.
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