exwrestler

The following codes keep coming up in my truck.
P0581
P0514
C1008
C2206
U0141
U0184
U0100
U0121

What is causing this and how do I fix it. I have had a mechanic clear these numerous times with no avail? please help

exwrestler

Would the Banks Ram Air or clockspring cause these? Stuck relays/ Im lost!

OCMerrill

P0581 Low Voltage Detected At The Speed Control Switch
P0514 BAT Temperature Sensor Rationality



U0141 Lost Communication With Fcm (tipm)
U0121 Lost Communication With Anti-lock Brake Module

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All I can find.

How are your batteries? I know the Can-Bus trucks are real sensitive to battery voltage. condition, and corrosion.

exwrestler

They were tested and cleaned also the alternator was also tested and good.

tesla440

it could be a power issue. Have the batteries been load tested. Bad batteries will cause codes to be thrown.

nascar-co

I am no expert but that looks like it could be a bad ground. The codes point to a power issue but if the batteries are good and the alternator was tested a bad ground would be what I would look for.