U0073 intermittant

[leon]

08 f550, u0073 in pcm, I remember reading on a post either

here or on PTS that some people were finding a wire chafe

around the radiator area, can someone enlighten me as the

specifics? Ive checked tbc and rcm wiring, this is an intermittant problem. this has a stellar boom on it and I have

checked the wiring at dlc for issues and do not see any problems, my arms and hands are tired from wiggling and yanking on harnesses!!!!

[Keith Browning]

I realize this is a little late but did you see this? Is the truck fixed?

 

1574 - 2008-2009 SUPER-DUTY F250-550 6.4L DIESEL DIAGNOSTIC TROUBLE CODE U0073

SOME 2008-2009 F250-550 SUPER-DUTIES EQUIPPED WITH 6.4L DIESEL ENGINES MAY EXHIBIT AN INTERMITTENT NO CRANK CONCERN WITH DIAGNOSTIC TROUBLE CODE(DTC) U0073- CONTROL MODULE COMMUNICATION BUS A OFF. NETWORK DTCS ARE OFTEN A RESULT OF INTERMITTENT CONCERNS SUCH AS FAULTY WIRING, LOW BATTERY VOLTAGE OR MODULE REPROGRAMMING. REPLACING A MODULE TO RESOLVE A NETWORK DTC IS UNLIKELY TO RESOLVE THE CONCERN. CHECK FOR WIRE CHAFES OR PINCHED WIRES AND PERFORM A WIGGLE TEST ON CONNECTORS FOR THE FOLLOWING MODULES: RESTRAINT CONTROL, TRAILER BRAKE CONTROLLER. INSTALLATION OF AFTERMARKET THROTTLE CONTROLLERS AND BODY-BUILDER MODIFICATIONS MAY HAVE DAMAGED THE CAN NETWORK OR WIRING. CONFIRM THAT NO VEHICLE MODIFICATIONS HAVE BEEN TIED INTO THE CAN NETWORK. REFERENCE WORKSHOP MANUAL SECTION 418-00-1 FOR OTHER DTC DIAGNOSTIC ROUTINES.

[leon]

keith, thanks, I did see that and what I eventually found was

at the dlc the boom rig is connected to the dlc and the wiring

from the upfitting is a little "rough" . found a strand of

wire sticking out from loom and making connection with another

the wires were stipped back quite a way and I tried to remove

and heat shrink over them for the repair but they were too large

to fit back into the connector...taped the hell out of it, has

been gone for a while now