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Discussion Starter #1 (Edited)
2015 F350 with approximately 130k Miles.

Truck has started occasionally losing power and smoking. PSI gauge goes up to 4, but it’s definitely not running that hot.

It’s almost like the truck is stuck in neutral, but when you touch the gas, nothing happens. Sometimes it will kick back into gear and be fine, and other times I have to pull over and turn the truck off.

I’ve had a full diagnostic from Ford done, and they couldn’t find any issues. I’m at a loss. The truck is deleted and has a tuner. The issue there is that the previous owner put the tuner on, and I have no idea what tuner that was.

Thanks in advance.
 

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Discussion Starter #2
Went to a mechanic today and his scan found two codes.

B1215-00

U0401-00

Anyone have experience with these?
 

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Thank you for the replies. Update, I changed the fuel filters, and it seems to be running better. It died again today, but this time there wasn’t a big cloud of smoke. Battery light came on. The code makes me think it may be something with the ECM. Anyone have any thoughts on that?
 
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