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engine code help

2K views 2 replies 3 participants last post by  Big Angry Hillbilly 
#1 ·
my check engine light isnt on but i checked for codes and found these. P0528 and U0238. i cant find out what they mean. thx
 
#3 ·
Probably needs a fan clutch, or the wiring has been mangled up where it clips into the fan stator.

Year/Model of truck would be appreciated, too - makes it a little easier to offer input sometimes.

I don't show your U code in my manual - however U codes are set during module to module network communications, it may be nothing to worry about at this point in time.
 
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