Washington, Kansas & Lincoln, Nebraska | Are these error codes active? Or are they stored? 312 is an FWD solenoid cicuit short. 342 is an engine speed sensor circuit open. 388 is a transmission oil pressure switch circuit failed low.
314 and 334 would be PTO short and open respectively.
The number 5 relay in the main distribution panel on your right cab B pillar is a PTO relay. You might check that. #20 fuse is PTO as well, but it also should affect transmission shifting.
Edited by Larry NCKS 6/19/2009 07:54
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