119000 mile 2011 Jetta TDI
- Thread starter evalen14
- Start date
oilhammer
Certified Volkswagen Nut & Vendor
It could need to be driven to initiate a regen, as it has attempted, and failed, enough times to trigger that lamp.
A scan tool will tell you for sure. It may just need a thermostat. Just depends on why the lamp came on. The DPF or the deNOx catalyst (two completely separate parts) can both cause that to happen.
A scan tool will tell you for sure. It may just need a thermostat. Just depends on why the lamp came on. The DPF or the deNOx catalyst (two completely separate parts) can both cause that to happen.
oilhammer
Certified Volkswagen Nut & Vendor
I just noticed, given your location, and the relatively low mileage of your car, that it may be subjected to a lot of short trips, and not many good long highway miles. If that is the case, it may just be it needs just that. But that's just a guess, because until someone asks the car, that's all we can do.
Would you happen to know how long generally the Cat Convertor lasts? I have the timing belt/water pump coming up....expensive repairs
oilhammer
Certified Volkswagen Nut & Vendor
Heh, that's a loaded question, and probably necessitates context.
Your car has THREE catalytic converters, plus the Diesel Particle Filter.
The first one, the DOC, is integral with the DPF, in one housing, all welded together. That catalyst probably would/could last indefinitely, nobody knows, because the DPF it is paired with certainly can't. DPFs fail. A lot. They crack internally, they don't "clog" up.
The second catalyst, the deNOx unit (the big can in the middle), sometimes called a NOx adsorber, or a lean-NOx trap, can last a pretty long time... but when the DPF fails, it is subjected to a bunch of soot getting in its substrate, which can shorten (and often end) its useable life.
The third catalyst, at the end, is the Hydrogen-Sulfide catalyst, that is a "clean up" component that is not at all monitored for function... so there is no way to know how long it lasts without some lab testing. They could have all given up their functionality after 100k miles for all we know.
Your car has THREE catalytic converters, plus the Diesel Particle Filter.
The first one, the DOC, is integral with the DPF, in one housing, all welded together. That catalyst probably would/could last indefinitely, nobody knows, because the DPF it is paired with certainly can't. DPFs fail. A lot. They crack internally, they don't "clog" up.
The second catalyst, the deNOx unit (the big can in the middle), sometimes called a NOx adsorber, or a lean-NOx trap, can last a pretty long time... but when the DPF fails, it is subjected to a bunch of soot getting in its substrate, which can shorten (and often end) its useable life.
The third catalyst, at the end, is the Hydrogen-Sulfide catalyst, that is a "clean up" component that is not at all monitored for function... so there is no way to know how long it lasts without some lab testing. They could have all given up their functionality after 100k miles for all we know.
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TurboABA
Top Post Dawg
- Joined
- Jul 24, 2010
- Location
- Kitchener, ON
- TDI
- RIP-2010 Jetta 6spd 2014 Touareg Execline '14 A6 Technik S-line
You're playing with fire... 10 years was a while ago and you're still rocking that original timing belt...
Rob Mayercik
Veteran Member
What part of NJ are you in?
Rob Mayercik
Veteran Member
Ah, ok, so you're up near I-78 then. I pass through there on 78 daily, I'm out west in Hunterdon County. Have a guy near me that I'd trust, but that'd be 30-45 minutes from you. If you're interested, though, I can PM you the details.
I bought my Jetta at the dealer in Lyndhurst, but I've not had the car there for anything in years and don't know how their service department is these days (my last "data" is from around 2008 or slightly before).
I bought my Jetta at the dealer in Lyndhurst, but I've not had the car there for anything in years and don't know how their service department is these days (my last "data" is from around 2008 or slightly before).