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P0299 Problems

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preandj

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I've keep getting a P0299 code and can't seem to find the problem. I bought a scan tool to pull some data and not sure what the data is trying to tell me. The Absolute Load Value is high, Air Flow from the MAF is high and the fuel Injection is high. I've checked the air filter and I am running a clean OEM air filter so that's not the issue. I don't see any wear on the CAC intake tube from the turbo either. Might be unrelated but randomly when I get in the truck to drive it, it'll some times be in a "limp" mode where I can't drive over 20mph ish. I usually have to turn it on and off once or twice and it'll drive fine. I've attached the scan tool report to this post as well.

It's a 2019 RAM 3500 Limited with the HO 6.7L Cummins
 

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preandj said:
I've keep getting a P0299 code and can't seem to find the problem. I bought a scan tool to pull some data and not sure what the data is trying to tell me. The Absolute Load Value is high, Air Flow from the MAF is high and the fuel Injection is high. I've checked the air filter and I am running a clean OEM air filter so that's not the issue. I don't see any wear on the CAC intake tube from the turbo either. Might be unrelated but randomly when I get in the truck to drive it, it'll some times be in a "limp" mode where I can't drive over 20mph ish. I usually have to turn it on and off once or twice and it'll drive fine. I've attached the scan tool report to this post as well.

It's a 2019 RAM 3500 Limited with the HO 6.7L Cummins
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Have you owned the truck since new? there was a reflash available for early trucks and the 299 code was one reason it was released.

 
This problem I think I can help, if you still have it. I had the same issue with mine. If you haven't figured this out. On mine the dealership did two things. 1. Changed out the DPF filter. If you had the recall done on the emissions system you will have an extended warranty on the emissions. So that could be covered. It's like an additional 40K warranty. 2. Replace the turbo actuator. Now I'm not totally sure which one of those issue resolved my problem, but mind was doing the same thing. Go into limp mode shortly and then run and 299 code. Depending on how many miles you have depends on how to fix this issue. If you have under 50K miles I'd say it's not the DPF filter, just the turbo actuator. Good luck.
 
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