5th Gen Ram 1500 P219a

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JTARNECKI83

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Location
Mobile, AL
Ram Year
2022
Engine
Hemi 5.7
Hello all,
I am getting a P219a (fuel/air ratio imbalance bank 1) on my '22 ram 5.7. It only trips the engine light on very long drives. Like hour 5 or 6. Truck is running perfectly fine, no shifting issues or whatnot. I took it in to my dealer, but the engine light went out from daily around town driving, and the dealer could not find any issues. Ran fuel injector tests, everything checked out. They had a TSB for a pin on the camshaft that could possibly be bent, but like others have described it is a teardown job just to inspect it and runs ~2-3k and that may not be the issue.

Does anyone have any insight on this code for a 5th gen? i've seen plenty of posts about the 4th gen and possible causes but not much regarding my generation. What are the chances that it could be something simple like a O2 sensor acting up only on long duration drives? Should i throw some seafoam at this problem, replace an O2 sensor just to rule that possibility out? I use regular 87 gas rather than 89. That wouldn't do it would it?

Reason i ask is if the dealer can't determine the issue cause of it only happening at very long drives, then perhaps i should try a thing or two. But i'd appreciate the thoughts of the forum community.
 
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JTARNECKI83

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Mobile, AL
Ram Year
2022
Engine
Hemi 5.7
no responses yet? I have a big 800 mile round trip coming up in about a week. Im gonna try running a higher octane fuel (89) rather than 87, and i'll dump a can of seafoam in and report back. If that still triggers the p219a, i may buy plugs and throw in a new bank 1 OEM O2 sensor.
 

turkeybird56

Military Vet 1976-1996 Retired US Army
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Read this: All I have to offer. Running good top tier fuel, and IMHO 89 Octane or better helps, but not set off code, tho on the 2025's, there seems to be some reported issues ref fuel. Sounds like O2 sensor. Mine went bad and took to dealer and they replaced one under warranty. Left dealership and drove 1/4 mile to BK to get a burger and same code popped back up. Well got my burger and back to dealer. They replaced all 4 sensors: Up and down stream, took care of problem.

ADDED: Wateva U do, if U replace O2 sensors, OEM ONLY...

 
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JTARNECKI83

Junior Member
Joined
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Posts
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Location
Mobile, AL
Ram Year
2022
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Hemi 5.7
Thanks. Unfortunately the dealer did not want to cover a warranty claim unless they can confirm the part is bad. So i'll probably swap out one on the bank one side if the light gets triggered again. I appreciate the input. Guessing game on these intermittent faults
 
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