PSDPlayer
10-30-2009, 05:44 PM
SOME 2009-2010 F250-550 VEHICLES EQUIPPED WITH A 6.4L DIESEL ENGINE, WITH LESS THAN 5000 MILES, MAY EXHIBIT DIAGNOSTIC TROUBLE CODES P0404 AND/OR P1335. THIS MAY BE DUE TO WELD SLAG/DEBRIS, FROM TURBO UP-PIPE MANUFACTURING PROCESS, BEING STUCK IN THE EGR VALVE AND PREVENTING IT FROM SEATING PROPERLY. BEFORE PROCEEDING WITH NORMAL DIAGNOSTICS, INSPECT THE VALVE FOR DEBRIS HOLDING THE VALVE OPEN. REMOVE DEBRIS IF FOUND, AND THEN ACTIVELY COMMAND THE VALVE OPEN AND CLOSED WITH THE VALVE REMOVED FROM THE ENGINE TO CHECK FOR PROPER OPERATION BEFORE REINSTALLING AND RETESTING. <!--</pre>-->