TIB-43-031

KENWORTH: SEE DOCUMENT SEARCH BUTTON SEARCH BUTTON FOR OWNER LETTER. DUE TO DEF DOSER NOT RESPONDING OR IS OUT OF FAULT ADJUSTMENT, THE COOLANT LINES (CROSSOVER EXHAUSTS) ARE ROUTED INCORRECTLY, IN SOME CHASSIS, AND MAY CAUSE ERROR CODES (P3859, P3569). NO MODELS OR MODEL YEARS LISTED. *PE