Check Engine Light
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1st Gear
Joined: Aug 2024
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Check Engine Light
My 2021 Ford f250 super duty throwing all these codes: U0074 U02A3 U1013 U029D U0106 U0101 U0307 U02A2 U029E P21CD
including warning lights such as advanced traction control unavailable, hill decent control unavailable, hill assist unavailable, ABS unavailable, and DEF Fault.
Went on about a 5 1/2 road trip was running fine the entire way. As soon as I started my way home all these warning lights flashed and these were the codes when I plugged it in to the OBD. I did read a forum saying to check the back connector near spare tire for moisture so I wiped it down and applied dielectric grease but then it wouldn’t start. I had to clear the codes to get the truck to start and made it home and truck was driving fine (thankfully) as soon as I got home I turned it off and restarted it and they all popped back on ? Any ideas?
including warning lights such as advanced traction control unavailable, hill decent control unavailable, hill assist unavailable, ABS unavailable, and DEF Fault.
Went on about a 5 1/2 road trip was running fine the entire way. As soon as I started my way home all these warning lights flashed and these were the codes when I plugged it in to the OBD. I did read a forum saying to check the back connector near spare tire for moisture so I wiped it down and applied dielectric grease but then it wouldn’t start. I had to clear the codes to get the truck to start and made it home and truck was driving fine (thankfully) as soon as I got home I turned it off and restarted it and they all popped back on ? Any ideas?
More Turbo
Joined: Oct 2023
Posts: 700
Likes: 478
Load test the batteries. Diesels are hard on the batteries and they fail sooner. Whatever systems are not getting the appropriate juice at startup are going to set off DTCs, so you get a whole bunch at once like you did.
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