BimmerFest BMW Forum banner

CEL code 455

874 Views 1 Reply 2 Participants Last post by  bluebee
Has anyone had experience with CEL code 455?
It's something like "gas tank pressure (large) leak" but the gas cap looks fine.
Is it possible the gas cap is invisibly broken?
1 - 2 of 2 Posts
P0455 is a pain sometimes because you have a leak in a purge valve or a rubber fuel vapor hose, etc., and you will need to identify all the parts of the system, and then trace each one of them in turn.

BTW, as an aside, I tested when the DTC's clear & set by removing my gas cap for six months as described in this thread:
- What happens with the P0455 diagnostic trouble code when the gas cap is missing (1)
Has anyone had experience with CEL code 455?
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.