zporta
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- Oct 10, 2013
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I have a 2014 with a Mini Maxx and gear head tuning, EGR/DPF delete and a s&b intake. Everything has been installed for 10k and 8 months without a single change.
After my Dad borrowed my truck to pick up some lumber i noticed a check engine light right when i jumped in. Not sure what could have happened or changed for the 30 min he had my truck i checked the DTC on my tuner and got U0074-Control Module Communication Bus B Off.
I tried clearing it a few times but it kept coming back upon the next start up or two. I also tired clearing it and then disconnecting the tuner to eliminate the idea of a bad HDMI connection, came right back. I contacted Gearhead and they gave me a few things to try and assured me its not tune related. I also returned the truck to stock and then reloaded the tune. It went away for a quick stroll around the block, and my 15 min drive home. I thought it was fixed until this morning i started the truck and it was back.
Out of ideas here, didn't come up with much info on a google search. I tried calling H&S but only got the machine.
Anyone had this or have any clue?
After my Dad borrowed my truck to pick up some lumber i noticed a check engine light right when i jumped in. Not sure what could have happened or changed for the 30 min he had my truck i checked the DTC on my tuner and got U0074-Control Module Communication Bus B Off.
I tried clearing it a few times but it kept coming back upon the next start up or two. I also tired clearing it and then disconnecting the tuner to eliminate the idea of a bad HDMI connection, came right back. I contacted Gearhead and they gave me a few things to try and assured me its not tune related. I also returned the truck to stock and then reloaded the tune. It went away for a quick stroll around the block, and my 15 min drive home. I thought it was fixed until this morning i started the truck and it was back.
Out of ideas here, didn't come up with much info on a google search. I tried calling H&S but only got the machine.
Anyone had this or have any clue?