early 03 6.0 wiring harness?

[kevin41]

working on an early build 03 with numerous circuit codes and some intermittant drivability and charging system concerns p0046 turbo boost control circuit p0231fuel pump secondary circuit p0403 egr v. p. circuit p0460 fuel level sensor circuit p0480 cooling fan control circut p0528 cooling fan no signal p0562 sys voltage low p1378 ficm supply voltage low p1379 ficm supply voltage high cleared codes wiggled harness inspected for chaff road tested now cant duplicate concern my gut tells me to put a harness in it but its c.p. and would like to verify concern if anyone has any ideas it would be greatly appreciated

[Mekanik]

I think this thing has a few problems. I used to see a lot if FICM harnesses chafe on the valve cover bolt or stud right under the FICM. I don't think the p0231 or p0460 are related to the engine wiring harness. p0528, p0562 might be the fan clutch. the p0403 is probably an EGR valve. But if you can't duplicate anything, I wouldn't do anything.

There is a link on the PTS website that shows pictures of wiring chafes on these engines.

Good Luck

[kevin41]

thanks for the info customer picked up truck and will bring it back when acts up.