2001 RAM 5.7 2500 CCD, No Bus issue

[truc0011]

So I started the truck last night and it started hard. It’s been
doing this for a couple of weeks I just assumed it was the fuel pressure
regulator because it only starts hard after sitting for awhile. Well this time
it lit up like a Xmas tree. The check engine, abs, airbag all came on, not to
mention the seat belt light and the low fuel which were already on. The
odometer now reads No Bus and the temp/map reads CCd. Has anybody encountered this?

[troy1]

I personally know of one person that replaced their PCM and everything is great now. When it acts up unplug your crankshaft position sensor and see if the bus comes back up if not unplug the TPS and do the same. There are a couple of there sensors that transmit on the bus but I can't remember what they are right know.

[atvman69]

yea i had the same problem . i figure out wat it was . look on the driver side under the hood behind the fuse box . check the black ground wire going into the fuse box . make sure it not loose.