2019+ Frequent Regeneration Issue Tracking Sheet

[OLEJOE]

TBAP sensor?

On the air filter box by the MAF sensor. The one I replaced it with is a Cummins part.

 

[OLEJOE]

68447683AB

Yes that would be the Mopar part number.

 

[Units]

Yes that would be the Mopar part number.

So you replaced it with one that was branded Cummins or you replaced it with the 68447683AB/mopar one? I saw pictures of 2, one from china and one from germany. If branded Cummins, where did you get it?

 

[OLEJOE]

So you replaced it with one that was branded Cummins or you replaced it with the 68447683AB/mopar one? I saw pictures of 2, one from china and one from germany. If branded Cummins, where did you get it?

The one that was on mine originally was from the Czech Republic and only had the Cummins part number on it 2897332. The new one that I got from Geno’s was supposedly made in the USA and was part number 2897332NX. I changed it because the original one was showing a higher pressure reading than it should have. The sensor measures absolute barometric pressure and temperature. The absolute barometric pressure is used to determine elevation and air density along with temperature.

 

[OLEJOE]

The sensor measures in psi and the original one was reading 15.0 psi all of the time here at home. The new sensor has read down as low as 14.35 and as high as 14.65 psi but never to 15. Using the ScanGauge, I noticed with the truck not running but with the key on, the TBAP and the MAP sensor read exactly the same psi. So I wonder if the TBAP sensor calibrates the MAP sensor. It is working well but I haven’t taken it up to higher elevation yet to see how it works since I got the SG III.

 

[Units]

The sensor measures in psi and the original one was reading 15.0 psi all of the time here at home. The new sensor has read down as low as 14.35 and as high as 14.65 psi but never to 15. Using the ScanGauge, I noticed with the truck not running but with the key on, the TBAP and the MAP sensor read exactly the same psi. So I wonder if the TBAP sensor calibrates the MAP sensor. It is working well but I haven’t taken it up to higher elevation yet to see how it works since I got the SG III.

The one that was on mine originally was from the Czech Republic and only had the Cummins part number on it 2897332. The new one that I got from Geno’s was supposedly made in the USA and was part number 2897332NX. I changed it because the original one was showing a higher pressure reading than it should have. The sensor measures absolute barometric pressure and temperature. The absolute barometric pressure is used to determine elevation and air density along with temperature.

Wonder if that has anything to do with the DPF gauge loading quicker in warm months vs cold months? Gonna look and see which one is in my truck when I get home.

 

[OLEJOE]

Wonder if that has anything to do with the DPF gauge loading quicker in warm months vs cold months? Gonna look and see which one is in my truck when I get home.

I don’t know but my DPF gauge rarely moves at all now.

 

[OLEJOE]

Wonder if that has anything to do with the DPF gauge loading quicker in warm months vs cold months? Gonna look and see which one is in my truck when I get home.

I would think that it would as it also measures in coming air temperature as well as pressure. It’s worth checking if you have the ability to see if it is showing the elevation correctly. My original sensor showed that it was at 500 feet below sea level and Im at 200 feet above. But it may have been a combination of the two things that the sensor checks. I’m anxious about our next trip to SLC and to get higher in altitude to see if it runs any better than it did before. Before I changed the sensor, in higher altitude around 6000 ft, it was kinda antsy feeling.

 

[OLEJOE]

Wonder if that has anything to do with the DPF gauge loading quicker in warm months vs cold months? Gonna look and see which one is in my truck when I get home.

Well as you know, it’s been very warm here lately with very high humidity and a high pressure system in place. I’m 23 hours since the last regen with 1145 miles and zero on the DPF EVIC gauge. I did have 420 miles towing this interval (385 miles after regen). I’m going to drop back on the percentage of 6500 and see if it continues. If it does, I’m going to discontinue the 6500 and just run the 6400 every 5000 miles. The recent towing trip is the first towing I’ve done since replacing the sensor. Have another much longer trip coming up the end of August.

 

[N900WM]

Be sure that they check the lifter bores. Another member on here had lifter problems and they had to change the block also.

That is exactly what happened. The short block was replaced and now 11 months later, the truck is still at the dealer with a no start condition.