26,500 Miles now, CEL comes on so I swing by my dealer. Exhaust Particulate Matter Sensor is "bad". New sensor is supposed to arrive Tuesday, appointment on Wednesday. It is noisier than normal, so I have it parked and am driving the Passat. Will post results.
I am not afraid of the engine or transmission, but my ECM, BCM, and now this sensor failure is why I wish GM kept the 100,000 mile warranty on the Duramax line.
I can't help but to wonder if a lawyer couldn't help with that coverage (not that it would be worth the expense of a lawyer). It's a reasonable argument that this is a powertrain part, as the powertrain does not work when that part is bad.
Also did I imagine that there is supposed to be a 100k emissions warranty? Is that in CA only?
I can't help but to wonder if a lawyer couldn't help with that coverage (not that it would be worth the expense of a lawyer). It's a reasonable argument that this is a powertrain part, as the powertrain does not work when that part is bad.
Also did I imagine that there is supposed to be a 100k emissions warranty? Is that in CA only?
Lawyer won't help, the provisions of the warranty are clearly spelled out in the warranty booklet. There are lots of parts not covered that will render the truck inoperative if they fail, but that sensor isn't one of them. At least, it won't immediately become inoperative. I'm not sure how long it would take for that to happen, but I was able to put quite a few miles on my truck with a bad sensor.
Yes, it's California that gets the longer emissions warranty on a number of parts.
I'm 100% in favor of getting the extended warranty if you buy the diesel. I paid 2500 for the warranty mine and it's paid about 500 of it so far with the latest sensor failure.
Does installing a new particulate matter sensor require any reprogramming after a DIY install? I’ve had this sensor replaced under warranty three times, but I’m wondering for when I’ll eventually have to deal with it myself out of warranty. I do know you have to prove to the ECM that the emission system is working correctly to clear out any permanent CELs.
The pm sensor part was updated combined with software parameter updates to reduce errors. I wouldn’t be as concerned as them replacing with the same part. I didn’t answer your question so maybe someone else can chime in. I know you can chnage the nox sensors out no problem I would assume you would be good to go
Just went for a 100 mile drive. Even the “permanent“ code is gone. I do not believe any dealer programming is needed.
And, FWIW, I bought a “used“ one from Amazon in their warehouse deals section. It was $65 including tax. Good news it wasn’t used. There were no signs of having been installed. However, it was not in its original packaging. Often, Amazon sells stuff as used if the packaging gets damaged.
I would like to add that the old sensor was surprisingly clean. I doubt there was anything wrong with the sensor itself. I’d bet the failure was with the electronic module that comes with it. I’d also like to point out the code first appeared after I washed the undercarriage to remove road salt. I waited over a month and for the code to reappear twice before I replaced the sensor hoping it was a transient issue caused by me washing the undercarriage.
Also, on the “used” sensor sold on Amazon. As problematic as these sensors seem to be, for $65 I would buy another one just to have on shelf if I wasn’t planning to delete when the warranty is expired.
FYI - sensors are covered for 2 years, 24K miles under the 8 year 80K mile Federally mandated emissions warranty. All the other stuff (DPF, DOC, EGR parts, etc) should be covered for the full 8 year/80K miles.
I heard this P24B1 on the 2.8 Duramax could be a result of a bad/corroded connection to the PM (soot) sensor. I see there are many different sensors on the exhaust system; Does anyone know where this one sensor is connected so I can try improving its connection?
I am attempting to chase down a problem with excessive regen cycles (every 100 miles or so, maybe 130-200 if I'm strictly driving the highway) in my 2016 colorado 2.8L with about 40k on it. For some background I believe this problem started last winter after I popped my rear main seal because of...
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I have a 2018 and have had it into the dealer 8 times now only 40,000 kms. on it. the shop foreman has been great he even changed the ECM after my 7th visit. They cut a sensor open and it appeared there was some rust inside of it - so GM suggested it was my driving cycle - short trips! So I asked if they were suggesting I need to do 20-30 Kms every time I need to run to the store??? I think the add on pollution components are not engineered correctly for our climate if condensation is causing the particulate sensor to fail continually. - The other solution that several diesel owners I know have done is strip the whole system out but now we have a vehicle that would be no compliant and possibly hard to sell at some point. Anyone have any other ideas???
I have a 2018 and have had it into the dealer 8 times now only 40,000 kms. on it. the shop foreman has been great he even changed the ECM after my 7th visit. They cut a sensor open and it appeared there was rust so GM suggested I am driving too many short trips? I suggested to them that they have miss engineered this sensor and or particulate matter system. There appears to be no solution other than strip the exhaust system out and run the vehicle without the emissions protection. That could lead to other issues I imagine, like if or when you decide to sell/trade in!
Not a good position GM has created
I've had the same code thrown for a while. Dealership confirmed it was not covered. I bought the part but haven't been able to break the old one free to swap them out and might need a trip down the road to the local shop for them to do it. The funny thing is that sometimes the CEL is on and sometimes it turns itself off all by itself. Makes me thing it's not the sensor and is more likely an electronic problem. I'm more worried about wire chafing or shorts at this point.
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