6.7 powerstroke warning codes and no start
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Joined: Mar 2018
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6.7 powerstroke warning codes and no start
Yesterday I went to start up 2015 F350 Powerstroke and as soon as the truck turned on it came up with a bunch of warning codes such as low oil pressure, excessive engine heat, service advanced track and the service wrench symbol. Immediately I turned the truck off and waited a minute or two and tried to restart it. The truck wouldn't restart and it took me about 8 or 10 cycles of the key to finally get it to restart, then the check engine light was on. I just got done loading a mini excavator on my flatbed trailer and when I got the truck running and started to leave I noticed that I didn't have any trailer brakes at first but they seemed to work after I applied them manually through the manual override. I took the truck to my local truck garage and they scanned the computer and found 5 codes reading lost connection to ecm, steering column, instrument cluster, ect. I had them reset the codes and the engine light went out. My truck is driving normally without any issues so I am wondering if this is just a fluke thing or if something is wrong with it.
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Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 118
From: Tallassee, ALabama
Sounds like some U codes that signify communication problems on the high speed or medium speed CAN Bus. I would start by removing and spraying something like WD40 in the ECM plugs and then reset them a few times. I would also check to see if the connector in the park brake area is connected good. I do not know which connector it actually is but there seems to be one there that can cause issues.
Posting Guru
Joined: Oct 2013
Posts: 1,039
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From: NC
x2 I think this is probably your issue, especially if you use your parking brake a lot.
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