I've tried searching for more information on this issue but I'm struggling to find anything specific. Sorry if I missed it in another thread.

I recently started getting a check engine light on my 2006 LR3. Pulling the codes with the GAP tool shows a number of the common "phantom" codes as well as the one below:

• P2451-00 (AA) Evaporative emission control system switching valve stuck closed

I don't have a lot of experience dealing with some of the emission control systems on this truck. Could this be related to the fuel cap or should I be pulling the evaporative canister or something else? Just curious if there are any other resources out there that I could use to track down the issue. TIA!

 

The EVAP system is simple yet annoying. In theory the valve is stuck closed because the system is not detecting a vacuum pull from the engine. The valve is on the passenger side behind the engine block. Not exactly easy to get at. They do indeed stick open/closed. Not sure if cleanable or if replacement is best.

 

I appreciate the information. I was hoping it was something simple like the fuel cap but after a bit more research I'm realizing that there is a specific error message for that issue. I'll start poking around back there and see if I can at least easily identify the part.

Thank you