no bus / CCD message (was: How to display error / fault codes 2001 Dodge Ram?)

From : tom lawrence

Q: only dodge rams 94 - 97 will flash the codes according to the on-off sequence. since mine is a 2001 i guess that explains why its not working and im not seeing any codes. while its true that this function went away in 98 it came back in 00 and has existed ever since. i suspect its because of your ccd bus problems that youre not getting any codes. after all the pcm communicates to the instrument cluster via the ccd bus. .

Replies:

From : nosey

under the hood i discovered that the gasket/rubber weatherstripping that runs across the top of the firewall was completely off and laying across the back of the engine/air cleaner. it appears to only be a press-fit no glue or contact cement. this probably isnt a high priority on your list but the weatherstripping can be tightened up by squeezing the weatherstrip channel with pliers. dont crimp it closed too tight or you wont be able to get it back on. -- ken .