- Sep 24, 2012
- Slower Lower Delaware
- 05 VW Passat, 04 Jetta, 06 BRM Jetta, sold 15 Golf current
Just shy of 180k miles. Almost all driving is from my commute which is 126 miles each way. My driving would be considered spirited with most drives my car sees 100mph runs. I don't monitor regens but rarely do my regens get interrupted.Have not seen that. What kind of driving patterns, mostly short? How many miles on it and do you monitor your regens?
Not under warranty? If I was I would try and have them fix everything first then delete if you choose to. Why foot the bill for that stuff? You don't know what all is affected there really. There may be other burned up stuff in that mess.
Those pressure sensors are for the exhaust, under normal operation there's no flow as its capped, so no soot, but soon as one end is opened you'll have flow. My guess when the melted, some soot shot past and filled up the heat shield.You sure you don't have a massive exhaust leak at the DPF?
I think you are right. The pressure sensor cracked and allow soot through.Those pressure sensors are for the exhaust, under normal operation there's no flow as its capped, so no soot, but soon as one end is opened you'll have flow. My guess when the melted, some soot shot past and filled up the heat shield.
Just happened last week on my 15 Golf after I changed the t-belt and pump. First re-gen about 80 miles later and it smoked it. Got parts/harness repair under VW emission warranty extension so it only cost me a few hours at the dealerThis happened to my '15 MK7 MT Wagen after a t-belt change. It was running fine in town but the first time out on the highway (presumably first re-gen) it went into limp mode. I limped to my errand, then had a CEL on the drive home. Code read DPF Sensor Fail. Sure enough- melted sensor.
It's apparently a thing that can happen sometimes after a t-belt change?
Hi Guys, After timing belt change i have some issues with the car O3 RS TDI. After i start it and do a couple of accelerations the power goes down, like a limp mode. I run a test with VCDS and found DPF Differential Pressure Sensor P2456 fault. I read about some issues with a pressure sensor G450...www.briskoda.net
Never moved them around enough to crack anything. Trust me, just removed the one bolt securing the bracket that holds the assembly. Most of any moving around is not in that area.Makes sense, cracked during timing belt change from moving them around. I assume it was already brittle
Trying to figure out why it happened. I really don't think it's anything to do with the belt change in regards to the actual physical replacement of the belt. Has to be something with having the battery cables off for a day along with possible changes from a stretched belt to a new belt.If the sensor is that fragile after all those heat cycles, it might make sense to proactively replace it during a TB change. that would at least save having to also replace the harness and it would be one less thing for the dealer to touch.
Well I can assure you I did not remove hard pipes, hoses or connectors. You simply have to remove the bolts for hard pipe attached to the upper timing cover.my guess is that some shops disconnect the hard pipes the cross the def injector/TB shown in your second picture for ease of access and they don't get seated 100% afterwards.
No need to periodically check the sensors. When they go, they go, and you'll know it. Failure triggers a check engine light and when the sensor melts down, the cabin smells like melted plastic and you may see smoke coming from under the hood. At least this was my experience.Great! Another thing to check and be paranoid about it I'll open that pouch later today
Edit: checked and it's all good.
Should they be in a replace schedule (TB schedule sounds reasonable)? I hate to have to splice connectors and such.No need to periodically check the sensors. When they go, they go, and you'll know it. Failure triggers a check engine light and when the sensor melts down, the cabin smells like melted plastic and you may see smoke coming from under the hood. At least this was my experience.